Q: Is 431,478 a Prime Number?
A: No, 431,478 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 431478 can be evenly divided by 1 2 3 6 9 18 23,971 47,942 71,913 143,826 215,739 and 431,478, with no remainder.
Since 431,478 cannot be divided by just 1 and 431,478, it is not a prime number.