3131320122113 has 4 divisors (see below), whose sum is σ = 3131340903600. Its totient is φ = 3131299340628.

The previous prime is 3131320122079. The next prime is 3131320122143. The reversal of 3131320122113 is 3112210231313.

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 3131320122113 - 2¹⁰ = 3131320121089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131320122143) 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, 10163063 + ... + 10466636.

It is an arithmetic number, because the mean of its divisors is an integer number (782835225900).

Almost surely, 2^{3131320122113} is an apocalyptic number.

It is an amenable number.

3131320122113 is a deficient number, since it is larger than the sum of its proper divisors (20781487).

3131320122113 is a wasteful number, since it uses less digits than its factorization.

3131320122113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20781486.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 3131320122113 its reverse (3112210231313), we get a palindrome (6243530353426).

The spelling of 3131320122113 in words is "three trillion, one hundred thirty-one billion, three hundred twenty million, one hundred twenty-two thousand, one hundred thirteen".