131195520 has 96 divisors (see below), whose sum is σ = 453054420. Its totient is φ = 34983936.

The previous prime is 131195509. The next prime is 131195539. The reversal of 131195520 is 25591131.

131195520 is a `hidden beast` number, since 131 + 1 + 9 + 5 + 520 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 127780416 + 3415104 = 11304^2 + 1848^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5629 + ... + 17148.

Almost surely, 2^131195520 is an apocalyptic number.

131195520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131195520 is an abundant number, since it is smaller than the sum of its proper divisors (321858900).

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

131195520 is a wasteful number, since it uses less digits than its factorization.

131195520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22802 (or 22787 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 131195520 is about 11454.0612884688. The cubic root of 131195520 is about 508.1278534083.

The spelling of 131195520 in words is "one hundred thirty-one million, one hundred ninety-five thousand, five hundred twenty".