131972936 has 24 divisors (see below), whose sum is σ = 261164070. Its totient is φ = 62512128.

The previous prime is 131972927. The next prime is 131972959. The reversal of 131972936 is 639279131.

It can be written as a sum of positive squares in only one way, i.e., 118940836 + 13032100 = 10906^2 + 3610^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131972893 and 131972902.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19961 + ... + 25736.

Almost surely, 2^131972936 is an apocalyptic number.

It is an amenable number.

131972936 is a deficient number, since it is larger than the sum of its proper divisors (129191134).

131972936 is a wasteful number, since it uses less digits than its factorization.

131972936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45741 (or 45718 counting only the distinct ones).

The product of its digits is 61236, while the sum is 41.

The square root of 131972936 is about 11487.9474232780. The cubic root of 131972936 is about 509.1295365480.

The spelling of 131972936 in words is "one hundred thirty-one million, nine hundred seventy-two thousand, nine hundred thirty-six".