131031322434013 has 4 divisors (see below), whose sum is σ = 131092868383740. Its totient is φ = 130969776484288.

The previous prime is 131031322433983. The next prime is 131031322434059. The reversal of 131031322434013 is 310434223130131.

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 52968672649764 + 78062649784249 = 7277958^2 + 8835307^2 .

It is a cyclic number.

It is not a de Polignac number, because 131031322434013 - 2²⁵ = 131031288879581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031322434083) 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, 30772971670 + ... + 30772975927.

It is an arithmetic number, because the mean of its divisors is an integer number (32773217095935).

Almost surely, 2^{131031322434013} is an apocalyptic number.

It is an amenable number.

131031322434013 is a deficient number, since it is larger than the sum of its proper divisors (61545949727).

131031322434013 is an equidigital number, since it uses as much as digits as its factorization.

131031322434013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61545949726.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 131031322434013 its reverse (310434223130131), we get a palindrome (441465545564144).

The spelling of 131031322434013 in words is "one hundred thirty-one trillion, thirty-one billion, three hundred twenty-two million, four hundred thirty-four thousand, thirteen".