Q: Is 631,340 a Prime Number?
A: No, 631,340 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 631340 can be evenly divided by 1 2 4 5 10 20 31,567 63,134 126,268 157,835 315,670 and 631,340, with no remainder.
Since 631,340 cannot be divided by just 1 and 631,340, it is not a prime number.