2312815138 has 16 divisors (see below), whose sum is σ = 3484157760. Its totient is φ = 1151439696.

The previous prime is 2312815123. The next prime is 2312815177. The reversal of 2312815138 is 8315182132.

It is a super-2 number, since 2×2312815138² = 10698227725123918088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563020 + ... + 567112.

It is an arithmetic number, because the mean of its divisors is an integer number (217759860).

Almost surely, 2^2312815138 is an apocalyptic number.

2312815138 is a deficient number, since it is larger than the sum of its proper divisors (1171342622).

2312815138 is a wasteful number, since it uses less digits than its factorization.

2312815138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5241.

The product of its digits is 11520, while the sum is 34.

The square root of 2312815138 is about 48091.7366914525. The cubic root of 2312815138 is about 1322.4531855456.

The spelling of 2312815138 in words is "two billion, three hundred twelve million, eight hundred fifteen thousand, one hundred thirty-eight".