131320317432 has 128 divisors (see below), whose sum is σ = 351483033600. Its totient is φ = 40794969600.

The previous prime is 131320317413. The next prime is 131320317449. The reversal of 131320317432 is 234713023131.

It is a self number, because there is not a number n which added to its sum of digits gives 131320317432.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8558007 + ... + 8573337.

It is an arithmetic number, because the mean of its divisors is an integer number (2745961200).

Almost surely, 2^131320317432 is an apocalyptic number.

131320317432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131320317432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175741516800).

131320317432 is an abundant number, since it is smaller than the sum of its proper divisors (220162716168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131320317432 is a wasteful number, since it uses less digits than its factorization.

131320317432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15797 (or 15793 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The spelling of 131320317432 in words is "one hundred thirty-one billion, three hundred twenty million, three hundred seventeen thousand, four hundred thirty-two".