318 = 2 x 3 x 53.
The sum of the digits of 318 is one less than the sum of the digits of its prime factors.
318 is the number of unlabeled partially ordered sets of 6 elements.
318 is the sum of 12 consecutive primes: 318 = 7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37 + 41 + 43 + 47.
318 is 2233 in base 5. It is 383 in base 9.
Source: Prime Curios!
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