312147057 has 4 divisors (see below), whose sum is σ = 416196080. Its totient is φ = 208098036.

The previous prime is 312147041. The next prime is 312147061. The reversal of 312147057 is 750741213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 312147057 - 2⁴ = 312147041 is a prime.

It is a super-2 number, since 2×312147057² = 194871570387522498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312147457) 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, 52024507 + ... + 52024512.

It is an arithmetic number, because the mean of its divisors is an integer number (104049020).

Almost surely, 2^312147057 is an apocalyptic number.

It is an amenable number.

312147057 is a deficient number, since it is larger than the sum of its proper divisors (104049023).

312147057 is a wasteful number, since it uses less digits than its factorization.

312147057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104049022.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 312147057 is about 17667.6839738546. The cubic root of 312147057 is about 678.3488319895.

The spelling of 312147057 in words is "three hundred twelve million, one hundred forty-seven thousand, fifty-seven".