2311538656 has 24 divisors (see below), whose sum is σ = 5200962480. Its totient is φ = 990659328.

The previous prime is 2311538633. The next prime is 2311538681. The reversal of 2311538656 is 6568351132.

It is a congruent number.

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, 5159461 + ... + 5159908.

It is an arithmetic number, because the mean of its divisors is an integer number (216706770).

Almost surely, 2^2311538656 is an apocalyptic number.

It is an amenable number.

2311538656 is an abundant number, since it is smaller than the sum of its proper divisors (2889423824).

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

2311538656 is a wasteful number, since it uses less digits than its factorization.

2311538656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10319386 (or 10319378 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The square root of 2311538656 is about 48078.4635361822. The cubic root of 2311538656 is about 1322.2098459727.

Adding to 2311538656 its reverse (6568351132), we get a palindrome (8879889788).

The spelling of 2311538656 in words is "two billion, three hundred eleven million, five hundred thirty-eight thousand, six hundred fifty-six".