311131301113 has 4 divisors (see below), whose sum is σ = 316231814308. Its totient is φ = 306030787920.

The previous prime is 311131301087. The next prime is 311131301147. The reversal of 311131301113 is 311103131113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101919285504 + 209212015609 = 319248^2 + 457397^2 .

It is a cyclic number.

It is not a de Polignac number, because 311131301113 - 2⁵ = 311131301081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311131301413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550256506 + ... + 2550256627.

It is an arithmetic number, because the mean of its divisors is an integer number (79057953577).

Almost surely, 2^311131301113 is an apocalyptic number.

It is an amenable number.

311131301113 is a deficient number, since it is larger than the sum of its proper divisors (5100513195).

311131301113 is an equidigital number, since it uses as much as digits as its factorization.

311131301113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100513194.

The product of its (nonzero) digits is 81, while the sum is 19.

Adding to 311131301113 its reverse (311103131113), we get a palindrome (622234432226).

The spelling of 311131301113 in words is "three hundred eleven billion, one hundred thirty-one million, three hundred one thousand, one hundred thirteen".