Q: Is 420,831 a Prime Number?
A: No, 420,831 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 420831 can be evenly divided by 1 3 9 19 23 57 69 107 171 207 321 437 963 1,311 2,033 2,461 3,933 6,099 7,383 18,297 22,149 46,759 140,277 and 420,831, with no remainder.
Since 420,831 cannot be divided by just 1 and 420,831, it is not a prime number.