57311304 has 16 divisors (see below), whose sum is σ = 143278320. Its totient is φ = 19103760.

The previous prime is 57311273. The next prime is 57311311. The reversal of 57311304 is 40311375.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 2387971 = 57311304 / (5 + 7 + 3 + 1 + 1 + 3 + 0 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1193962 + ... + 1194009.

It is an arithmetic number, because the mean of its divisors is an integer number (8954895).

Almost surely, 2^57311304 is an apocalyptic number.

It is an amenable number.

57311304 is an abundant number, since it is smaller than the sum of its proper divisors (85967016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57311304 is a wasteful number, since it uses less digits than its factorization.

57311304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387980 (or 2387976 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 57311304 is about 7570.4229736521. The cubic root of 57311304 is about 385.5494577729.

Adding to 57311304 its reverse (40311375), we get a palindrome (97622679).

The spelling of 57311304 in words is "fifty-seven million, three hundred eleven thousand, three hundred four".