318904 has 8 divisors (see below), whose sum is σ = 597960. Its totient is φ = 159448.

The previous prime is 318889. The next prime is 318907. The reversal of 318904 is 409813.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×318904² = 203399522432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19924 + ... + 19939.

It is an arithmetic number, because the mean of its divisors is an integer number (74745).

2³¹⁸⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

318904 is a deficient number, since it is larger than the sum of its proper divisors (279056).

318904 is a wasteful number, since it uses less digits than its factorization.

318904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39869 (or 39865 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 318904 is about 564.7158577550. The cubic root of 318904 is about 68.3208596440.

Subtracting 318904 from its reverse (409813), we obtain a palindrome (90909).

The spelling of 318904 in words is "three hundred eighteen thousand, nine hundred four".