311655556113 has 24 divisors (see below), whose sum is σ = 466469533824. Its totient is φ = 184863375840.

The previous prime is 311655556049. The next prime is 311655556169.

311655556113 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 311655556113 - 2⁶ = 311655556049 is a prime.

It is a super-2 number, since 2×311655556113² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (311655556183) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 9116506 + ... + 9150627.

It is an arithmetic number, because the mean of its divisors is an integer number (19436230576).

Almost surely, 2^311655556113 is an apocalyptic number.

311655556113 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

311655556113 is a deficient number, since it is larger than the sum of its proper divisors (154813977711).

311655556113 is a wasteful number, since it uses less digits than its factorization.

311655556113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18267205 (or 18267194 counting only the distinct ones).

The product of its digits is 202500, while the sum is 42.

It can be divided in two parts, 311655 and 556113, that added together give a palindrome (867768).

The spelling of 311655556113 in words is "three hundred eleven billion, six hundred fifty-five million, five hundred fifty-six thousand, one hundred thirteen".