Q: Is 431,123 a Prime Number?
A: No, 431,123 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 431123 can be evenly divided by 1 7 11 77 121 509 847 3,563 5,599 39,193 61,589 and 431,123, with no remainder.
Since 431,123 cannot be divided by just 1 and 431,123, it is not a prime number.