131539872 has 48 divisors (see below), whose sum is σ = 345885120. Its totient is φ = 43771392.

The previous prime is 131539867. The next prime is 131539879. The reversal of 131539872 is 278935131.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 131539872.

It is not an unprimeable number, because it can be changed into a prime (131539879) 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, 101404 + ... + 102692.

It is an arithmetic number, because the mean of its divisors is an integer number (7205940).

Almost surely, 2^131539872 is an apocalyptic number.

131539872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131539872 is an abundant number, since it is smaller than the sum of its proper divisors (214345248).

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

131539872 is a wasteful number, since it uses less digits than its factorization.

131539872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365 (or 2357 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 131539872 is about 11469.0833112329. The cubic root of 131539872 is about 508.5720301061.

The spelling of 131539872 in words is "one hundred thirty-one million, five hundred thirty-nine thousand, eight hundred seventy-two".