Donald Trump has managed to jump 51 spots in Forbes’ annual ranking of billionaires, even though the US President didn’t get any richer.

With an estimated net worth of $US3.1 billion ($43.8 billion), Mr Trump came in at 715 on the 2019 List of the World’s Richest People, published on Wednesday, making him the richest politician in Washington and the first ever billionaire to become president.

His net worth remained unchanged from last year, ranking 766 on 2018’s list.

According to Forbes, Mr Trump rose 51 spots largely due to the declining wealth of other billionaires.

Between 2017 and 2018, Mr Trump plummeted more than 200 spots – his real estate portfolio being the biggest source of the decline, followed by a drop in revenue at his golf courses.

Author of the list Jonathan Greenberg accused Mr Trump of giving the media company false information on the first three Forbes 400 lists to inflate his net worth.

Trump’s properties had mixed financial success in the last year.

Forbes reported that his Trump Tower and 6 East 57th St. retail property in New York lost a combined $US64 million ($A90.4 million) in value over the past year.

Meanwhile, his Miami, Florida, golf resort lost $26 million ($A36.7 million) in value.

Those losses were mitigated by a $160 million gain in Trump’s 30 percent stakes in two skyscrapers, 1290 Avenue of the Americas in New York and 555 California St. in San Francisco.

Australia’s iron ore queen Gina Rinehart has maintained her spot in an elite list of the world’s top 100 billionaires.

Gina Rinehart is still Australia’s number one billionaire. Photo: Getty

But she slipped down the ranks to number 75 in 2019, from 69 last year, although her current and depleted fortune of $US15.2 billion ($A21.5b) is nothing to sneeze at.

She leads the local pack ahead of developer Harry Triguboff, packaging magnate Anthony Pratt and Atlassian software founders Mike Cannon-Brookes and Scott Farquhar.

Casino investor James Packer is ranked the world’s 597th billionaire with $US3.6 billion ($A5.1b) and is number nine on the local list. But his fortune has declined to $US4.1 billion ($A5.8b) since 2018.

There are 2153 billionaires in the world, led by Amercian businessmen such as Amazon’s Jeff Bezos and Microsoft found Bill Gates.

This group has a combined worth of $US8.7 trillion which is enough to buy 124,000 high-end Gulfstream G-650 private jets.

Australia has 36 billionaires with a combined worth of $US114.4 billion ($A161.8b). That equates to almost four million average-price family cars.

-With AAP