Q: Is 31,400 a Prime Number?
A: No, 31,400 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 31400 can be evenly divided by 1 2 4 5 8 10 20 25 40 50 100 157 200 314 628 785 1,256 1,570 3,140 3,925 6,280 7,850 15,700 and 31,400, with no remainder.
Since 31,400 cannot be divided by just 1 and 31,400, it is not a prime number.