312940056 has 64 divisors (see below), whose sum is σ = 919134720. Its totient is φ = 87534720.

The previous prime is 312940021. The next prime is 312940057. The reversal of 312940056 is 650049213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312940057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42160 + ... + 49023.

It is an arithmetic number, because the mean of its divisors is an integer number (14361480).

Almost surely, 2^312940056 is an apocalyptic number.

It is an amenable number.

312940056 is an abundant number, since it is smaller than the sum of its proper divisors (606194664).

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

312940056 is a wasteful number, since it uses less digits than its factorization.

312940056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91216 (or 91212 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 312940056 is about 17690.1118142311. Note that the first 3 decimals coincide. The cubic root of 312940056 is about 678.9227869511.

Adding to 312940056 its reverse (650049213), we get a palindrome (962989269).

The spelling of 312940056 in words is "three hundred twelve million, nine hundred forty thousand, fifty-six".