87318523 has 8 divisors (see below), whose sum is σ = 88482240. Its totient is φ = 86159040.

The previous prime is 87318521. The next prime is 87318529. The reversal of 87318523 is 32581378.

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 87318523 - 2¹ = 87318521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87318521) 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, 70318 + ... + 71548.

It is an arithmetic number, because the mean of its divisors is an integer number (11060280).

Almost surely, 2^87318523 is an apocalyptic number.

87318523 is a deficient number, since it is larger than the sum of its proper divisors (1163717).

87318523 is a wasteful number, since it uses less digits than its factorization.

87318523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117.

The product of its digits is 40320, while the sum is 37.

The square root of 87318523 is about 9344.4380783437. The cubic root of 87318523 is about 443.6448662395.

The spelling of 87318523 in words is "eighty-seven million, three hundred eighteen thousand, five hundred twenty-three".