318012644 has 12 divisors (see below), whose sum is σ = 560208768. Its totient is φ = 157953000.

The previous prime is 318012641. The next prime is 318012677. The reversal of 318012644 is 446210813.

It is a super-2 number, since 2×318012644² = 202264083487741472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (318012641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262652 + ... + 263859.

It is an arithmetic number, because the mean of its divisors is an integer number (46684064).

Almost surely, 2^318012644 is an apocalyptic number.

It is an amenable number.

318012644 is a deficient number, since it is larger than the sum of its proper divisors (242196124).

318012644 is a wasteful number, since it uses less digits than its factorization.

318012644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526666 (or 526664 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 318012644 is about 17832.9090167589. The cubic root of 318012644 is about 682.5714659920.

The spelling of 318012644 in words is "three hundred eighteen million, twelve thousand, six hundred forty-four".