Q: Is 231,621 a Prime Number?
A: No, 231,621 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 231621 can be evenly divided by 1 3 13 39 5,939 17,817 77,207 and 231,621, with no remainder.
Since 231,621 cannot be divided by just 1 and 231,621, it is not a prime number.