131604432 has 20 divisors (see below), whose sum is σ = 339978240. Its totient is φ = 43868128.

The previous prime is 131604409. The next prime is 131604437. The reversal of 131604432 is 234406131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131604437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1370832 + ... + 1370927.

It is an arithmetic number, because the mean of its divisors is an integer number (16998912).

Almost surely, 2^131604432 is an apocalyptic number.

131604432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131604432 is an abundant number, since it is smaller than the sum of its proper divisors (208373808).

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

131604432 is a wasteful number, since it uses less digits than its factorization.

131604432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741770 (or 2741764 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 131604432 is about 11471.8974890817. The cubic root of 131604432 is about 508.6552191794.

The spelling of 131604432 in words is "one hundred thirty-one million, six hundred four thousand, four hundred thirty-two".