131607538 has 4 divisors (see below), whose sum is σ = 197411310. Its totient is φ = 65803768.

The previous prime is 131607527. The next prime is 131607559. The reversal of 131607538 is 835706131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 91068849 + 40538689 = 9543^2 + 6367^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32901883 + ... + 32901886.

Almost surely, 2^131607538 is an apocalyptic number.

131607538 is a deficient number, since it is larger than the sum of its proper divisors (65803772).

131607538 is an equidigital number, since it uses as much as digits as its factorization.

131607538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65803771.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 131607538 is about 11472.0328625750. The cubic root of 131607538 is about 508.6592207434.

The spelling of 131607538 in words is "one hundred thirty-one million, six hundred seven thousand, five hundred thirty-eight".