131604523 has 8 divisors (see below), whose sum is σ = 139823280. Its totient is φ = 123631200.

The previous prime is 131604491. The next prime is 131604541. The reversal of 131604523 is 325406131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131604523 - 2⁵ = 131604491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131604563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60253 + ... + 62398.

It is an arithmetic number, because the mean of its divisors is an integer number (17477910).

Almost surely, 2^131604523 is an apocalyptic number.

131604523 is a deficient number, since it is larger than the sum of its proper divisors (8218757).

131604523 is a wasteful number, since it uses less digits than its factorization.

131604523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122717.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 131604523 is about 11471.9014552950. The cubic root of 131604523 is about 508.6553364187.

The spelling of 131604523 in words is "one hundred thirty-one million, six hundred four thousand, five hundred twenty-three".