Q: Is 531,623 a Prime Number?
A: Yes, 531,623 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 531623 can be evenly divided by 1 and 531,623, with no remainder.
Since 531,623 can be divided by just 1 and 531,623, it is a prime number.