312550056 has 128 divisors (see below), whose sum is σ = 1068614400. Its totient is φ = 82425600.

The previous prime is 312550037. The next prime is 312550061. The reversal of 312550056 is 650055213.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11706 + ... + 27606.

It is an arithmetic number, because the mean of its divisors is an integer number (8348550).

Almost surely, 2^312550056 is an apocalyptic number.

312550056 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312550056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (534307200).

312550056 is an abundant number, since it is smaller than the sum of its proper divisors (756064344).

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

312550056 is a wasteful number, since it uses less digits than its factorization.

312550056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15936 (or 15926 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 312550056 is about 17679.0852704545. The cubic root of 312550056 is about 678.6406349845.

The spelling of 312550056 in words is "three hundred twelve million, five hundred fifty thousand, fifty-six".