131075520 has 56 divisors (see below), whose sum is σ = 416167824. Its totient is φ = 34953216.

The previous prime is 131075513. The next prime is 131075531. The reversal of 131075520 is 25570131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67309 + ... + 69228.

Almost surely, 2^131075520 is an apocalyptic number.

131075520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131075520 is an abundant number, since it is smaller than the sum of its proper divisors (285092304).

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

131075520 is a wasteful number, since it uses less digits than its factorization.

131075520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136557 (or 136547 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 131075520 is about 11448.8217734403. The cubic root of 131075520 is about 507.9728838317.

The spelling of 131075520 in words is "one hundred thirty-one million, seventy-five thousand, five hundred twenty".