Q: Is 31,420 a Prime Number?
A: No, 31,420 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 31420 can be evenly divided by 1 2 4 5 10 20 1,571 3,142 6,284 7,855 15,710 and 31,420, with no remainder.
Since 31,420 cannot be divided by just 1 and 31,420, it is not a prime number.