131320317445 has 8 divisors (see below), whose sum is σ = 165878295840. Its totient is φ = 99526977360.

The previous prime is 131320317413. The next prime is 131320317449. The reversal of 131320317445 is 544713023131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131320317445 - 2⁵ = 131320317413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131320317445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131320317449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 691159471 + ... + 691159660.

It is an arithmetic number, because the mean of its divisors is an integer number (20734786980).

Almost surely, 2^131320317445 is an apocalyptic number.

It is an amenable number.

131320317445 is a deficient number, since it is larger than the sum of its proper divisors (34557978395).

131320317445 is a wasteful number, since it uses less digits than its factorization.

131320317445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382319155.

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 131320317445 in words is "one hundred thirty-one billion, three hundred twenty million, three hundred seventeen thousand, four hundred forty-five".