Q: Is 1,207,731 a Prime Number?
A: No, 1,207,731 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 1207731 can be evenly divided by 1 3 7 17 21 51 119 199 289 357 597 867 1,393 2,023 3,383 4,179 6,069 10,149 23,681 57,511 71,043 172,533 402,577 and 1,207,731, with no remainder.
Since 1,207,731 cannot be divided by just 1 and 1,207,731, it is not a prime number.