131539912 has 48 divisors (see below), whose sum is σ = 291661020. Its totient is φ = 55440000.

The previous prime is 131539879. The next prime is 131539927. The reversal of 131539912 is 219935131.

It can be written as a sum of positive squares in 2 ways, for example, as 131469156 + 70756 = 11466^2 + 266^2 .

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, 21162 + ... + 26662.

Almost surely, 2^131539912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131539912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145830510).

131539912 is an abundant number, since it is smaller than the sum of its proper divisors (160121108).

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

131539912 is a wasteful number, since it uses less digits than its factorization.

131539912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5582 (or 5571 counting only the distinct ones).

The product of its digits is 7290, while the sum is 34.

The square root of 131539912 is about 11469.0850550513. The cubic root of 131539912 is about 508.5720816567.

The spelling of 131539912 in words is "one hundred thirty-one million, five hundred thirty-nine thousand, nine hundred twelve".