Q: Is 136,431 a Prime Number?
A: No, 136,431 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 136431 can be evenly divided by 1 3 9 27 31 93 163 279 489 837 1,467 4,401 5,053 15,159 45,477 and 136,431, with no remainder.
Since 136,431 cannot be divided by just 1 and 136,431, it is not a prime number.