Q: Is 231,721 a Prime Number?
A: No, 231,721 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 231721 can be evenly divided by 1 7 49 4,729 33,103 and 231,721, with no remainder.
Since 231,721 cannot be divided by just 1 and 231,721, it is not a prime number.