A billion is a thousand million, so, 3.1billion is 3,100,000,000
In the US, it is 31 billion 850 million dollars.
3.1 x 10 to the adkfjdklajld jcmcdsjf power
I write 620 billion as 620 billion.
31 billion is larger 6 billion 227 million 20 thousand 800 is much smaller than 31 billion or 31,000,000,000 vs 6,227,020,800
Sixteen point two billion is how I would write it.
You write 3.56 billion as 3,560,000,000.
You can write 40.3 billion as 40,300,000,000.
You can write out 1.8 billion as "1,800,000,000" or "one billion eight hundred million."
Since you asked how I would write the number, the answer is 1031.
1,000 billion billion is: 1,000,000,000,000,000,000,000
1 billion seconds is about 31 years and 215.56 days
35.9204067 billion