Q: Is 1,200,531 a Prime Number?
A: No, 1,200,531 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 1200531 can be evenly divided by 1 3 23 69 127 137 381 411 2,921 3,151 8,763 9,453 17,399 52,197 400,177 and 1,200,531, with no remainder.
Since 1,200,531 cannot be divided by just 1 and 1,200,531, it is not a prime number.