311312113 has 16 divisors (see below), whose sum is σ = 360889344. Its totient is φ = 263036880.

The previous prime is 311312101. The next prime is 311312171. The reversal of 311312113 is 311213113.

It is a cyclic number.

It is not a de Polignac number, because 311312113 - 2⁵ = 311312081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311312173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169108 + ... + 170938.

It is an arithmetic number, because the mean of its divisors is an integer number (22555584).

Almost surely, 2^311312113 is an apocalyptic number.

It is an amenable number.

311312113 is a deficient number, since it is larger than the sum of its proper divisors (49577231).

311312113 is a wasteful number, since it uses less digits than its factorization.

311312113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172.

The product of its digits is 54, while the sum is 16.

The square root of 311312113 is about 17644.0390217206. The cubic root of 311312113 is about 677.7434666428.

Adding to 311312113 its reverse (311213113), we get a palindrome (622525226).

The spelling of 311312113 in words is "three hundred eleven million, three hundred twelve thousand, one hundred thirteen".