Q: Is 831,640 a Prime Number?
A: No, 831,640 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 831640 can be evenly divided by 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 680 1,223 2,446 4,892 6,115 9,784 12,230 20,791 24,460 41,582 48,920 83,164 103,955 166,328 207,910 415,820 and 831,640, with no remainder.
Since 831,640 cannot be divided by just 1 and 831,640, it is not a prime number.