131391124 has 6 divisors (see below), whose sum is σ = 229934474. Its totient is φ = 65695560.

The previous prime is 131391049. The next prime is 131391149. The reversal of 131391124 is 421193131.

It can be written as a sum of positive squares in only one way, i.e., 70862724 + 60528400 = 8418^2 + 7780^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16423887 + ... + 16423894.

Almost surely, 2^131391124 is an apocalyptic number.

It is an amenable number.

131391124 is a deficient number, since it is larger than the sum of its proper divisors (98543350).

131391124 is a wasteful number, since it uses less digits than its factorization.

131391124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32847785 (or 32847783 counting only the distinct ones).

The product of its digits is 648, while the sum is 25.

The square root of 131391124 is about 11462.5967389593. The cubic root of 131391124 is about 508.3802565541.

The spelling of 131391124 in words is "one hundred thirty-one million, three hundred ninety-one thousand, one hundred twenty-four".