318229312 has 14 divisors (see below), whose sum is σ = 631486418. Its totient is φ = 159114624.

The previous prime is 318229279. The next prime is 318229333. The reversal of 318229312 is 213922813.

It can be written as a sum of positive squares in only one way, i.e., 299428416 + 18800896 = 17304^2 + 4336^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2486103 + ... + 2486230.

Almost surely, 2^318229312 is an apocalyptic number.

318229312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

318229312 is a deficient number, since it is larger than the sum of its proper divisors (313257106).

318229312 is an equidigital number, since it uses as much as digits as its factorization.

318229312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972345 (or 4972335 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 318229312 is about 17838.9829306494. The cubic root of 318229312 is about 682.7264470626.

The spelling of 318229312 in words is "three hundred eighteen million, two hundred twenty-nine thousand, three hundred twelve".