Q: Is 1,321,531 a Prime Number?
A: No, 1,321,531 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 1321531 can be evenly divided by 1 971 1,361 and 1,321,531, with no remainder.
Since 1,321,531 cannot be divided by just 1 and 1,321,531, it is not a prime number.