311020310113 has 4 divisors (see below), whose sum is σ = 311023288240. Its totient is φ = 311017331988.

The previous prime is 311020310093. The next prime is 311020310147. The reversal of 311020310113 is 311013020113.

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 a de Polignac number, because none of the positive numbers 2^k-311020310113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311020310213) 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, 1326495 + ... + 1543252.

It is an arithmetic number, because the mean of its divisors is an integer number (77755822060).

Almost surely, 2^311020310113 is an apocalyptic number.

It is an amenable number.

311020310113 is a deficient number, since it is larger than the sum of its proper divisors (2978127).

311020310113 is a wasteful number, since it uses less digits than its factorization.

311020310113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978126.

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

Adding to 311020310113 its reverse (311013020113), we get a palindrome (622033330226).

Subtracting from 311020310113 its reverse (311013020113), we obtain a square (7290000 = 2700²).

The spelling of 311020310113 in words is "three hundred eleven billion, twenty million, three hundred ten thousand, one hundred thirteen".