Q: Is 2,167,431 a Prime Number?
A: No, 2,167,431 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 2167431 can be evenly divided by 1 3 7 21 29 87 203 609 3,559 10,677 24,913 74,739 103,211 309,633 722,477 and 2,167,431, with no remainder.
Since 2,167,431 cannot be divided by just 1 and 2,167,431, it is not a prime number.