131078432 has 24 divisors (see below), whose sum is σ = 273241836. Its totient is φ = 61683712.

The previous prime is 131078417. The next prime is 131078513. The reversal of 131078432 is 234870131.

It can be written as a sum of positive squares in 2 ways, for example, as 108076816 + 23001616 = 10396^2 + 4796^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131078395 and 131078404.

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, 119933 + ... + 121020.

Almost surely, 2^131078432 is an apocalyptic number.

It is an amenable number.

131078432 is an abundant number, since it is smaller than the sum of its proper divisors (142163404).

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

131078432 is a wasteful number, since it uses less digits than its factorization.

131078432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240980 (or 240972 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 131078432 is about 11448.9489473925. The cubic root of 131078432 is about 507.9766455463.

The spelling of 131078432 in words is "one hundred thirty-one million, seventy-eight thousand, four hundred thirty-two".