Q: Is 67,431 a Prime Number?
A: No, 67,431 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 67431 can be evenly divided by 1 3 7 13 19 21 39 57 91 133 169 247 273 399 507 741 1,183 1,729 3,211 3,549 5,187 9,633 22,477 and 67,431, with no remainder.
Since 67,431 cannot be divided by just 1 and 67,431, it is not a prime number.