131404432 has 20 divisors (see below), whose sum is σ = 255184560. Its totient is φ = 65550368.

The previous prime is 131404421. The next prime is 131404463. The reversal of 131404432 is 234404131.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2182 + ... + 16357.

It is an arithmetic number, because the mean of its divisors is an integer number (12759228).

Almost surely, 2^131404432 is an apocalyptic number.

It is an amenable number.

131404432 is a deficient number, since it is larger than the sum of its proper divisors (123780128).

131404432 is a wasteful number, since it uses less digits than its factorization.

131404432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18990 (or 18984 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 131404432 is about 11463.1772209977. The cubic root of 131404432 is about 508.3974198039.

Adding to 131404432 its reverse (234404131), we get a palindrome (365808563).

The spelling of 131404432 in words is "one hundred thirty-one million, four hundred four thousand, four hundred thirty-two".