131687037437 has 4 divisors (see below), whose sum is σ = 131794714080. Its totient is φ = 131579360796.

The previous prime is 131687037431. The next prime is 131687037499. The reversal of 131687037437 is 734730786131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 734730786131 = 31 ⋅23700993101.

It is a cyclic number.

It is not a de Polignac number, because 131687037437 - 2²⁸ = 131418601981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131687037431) 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, 53836487 + ... + 53838932.

It is an arithmetic number, because the mean of its divisors is an integer number (32948678520).

Almost surely, 2^131687037437 is an apocalyptic number.

It is an amenable number.

131687037437 is a deficient number, since it is larger than the sum of its proper divisors (107676643).

131687037437 is a wasteful number, since it uses less digits than its factorization.

131687037437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107676642.

The product of its (nonzero) digits is 1778112, while the sum is 50.

The spelling of 131687037437 in words is "one hundred thirty-one billion, six hundred eighty-seven million, thirty-seven thousand, four hundred thirty-seven".