311555555113 has 4 divisors (see below), whose sum is σ = 339878787408. Its totient is φ = 283232322820.

The previous prime is 311555555099. The next prime is 311555555119.

311555555113 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 311555555113 - 2⁵ = 311555555081 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311555555119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14161616131 + ... + 14161616152.

It is an arithmetic number, because the mean of its divisors is an integer number (84969696852).

Almost surely, 2^311555555113 is an apocalyptic number.

It is an amenable number.

311555555113 is a deficient number, since it is larger than the sum of its proper divisors (28323232295).

311555555113 is a wasteful number, since it uses less digits than its factorization.

311555555113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28323232294.

The product of its digits is 140625, while the sum is 40.

It can be divided in two parts, 311555 and 555113, that added together give a palindrome (866668).

The spelling of 311555555113 in words is "three hundred eleven billion, five hundred fifty-five million, five hundred fifty-five thousand, one hundred thirteen".