131320839 has 16 divisors (see below), whose sum is σ = 192950912. Its totient is φ = 78932448.

The previous prime is 131320817. The next prime is 131320841. The reversal of 131320839 is 938023131.

It is not a de Polignac number, because 131320839 - 2⁷ = 131320711 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 (131320859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37477 + ... + 40830.

It is an arithmetic number, because the mean of its divisors is an integer number (12059432).

Almost surely, 2^131320839 is an apocalyptic number.

131320839 is a deficient number, since it is larger than the sum of its proper divisors (61630073).

131320839 is a wasteful number, since it uses less digits than its factorization.

131320839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78366.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 131320839 is about 11459.5304877643. The cubic root of 131320839 is about 508.2895911717.

The spelling of 131320839 in words is "one hundred thirty-one million, three hundred twenty thousand, eight hundred thirty-nine".