Q: Is 231,420 a Prime Number?
A: No, 231,420 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 231420 can be evenly divided by 1 2 3 4 5 6 7 10 12 14 15 19 20 21 28 29 30 35 38 42 57 58 60 70 76 84 87 95 105 114 116 133 140 145 174 190 203 210 228 266 285 290 348 380 399 406 420 435 532 551 570 580 609 665 798 812 870 1,015 1,102 1,140 1,218 1,330 1,596 1,653 1,740 1,995 2,030 2,204 2,436 2,660 2,755 3,045 3,306 3,857 3,990 4,060 5,510 6,090 6,612 7,714 7,980 8,265 11,020 11,571 12,180 15,428 16,530 19,285 23,142 33,060 38,570 46,284 57,855 77,140 115,710 and 231,420, with no remainder.
Since 231,420 cannot be divided by just 1 and 231,420, it is not a prime number.