Q: Is 331,240 a Prime Number?
A: No, 331,240 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 331240 can be evenly divided by 1 2 4 5 7 8 10 13 14 20 26 28 35 40 49 52 56 65 70 91 98 104 130 140 169 182 196 245 260 280 338 364 392 455 490 520 637 676 728 845 910 980 1,183 1,274 1,352 1,690 1,820 1,960 2,366 2,548 3,185 3,380 3,640 4,732 5,096 5,915 6,370 6,760 8,281 9,464 11,830 12,740 16,562 23,660 25,480 33,124 41,405 47,320 66,248 82,810 165,620 and 331,240, with no remainder.
Since 331,240 cannot be divided by just 1 and 331,240, it is not a prime number.