89318531 has 8 divisors (see below), whose sum is σ = 90609840. Its totient is φ = 88033792.

The previous prime is 89318513. The next prime is 89318539. The reversal of 89318531 is 13581398.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89318531 is a prime.

It is a super-2 number, since 2×89318531² = 15955599959995922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89318539) 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, 29996 + ... + 32838.

It is an arithmetic number, because the mean of its divisors is an integer number (11326230).

Almost surely, 2^89318531 is an apocalyptic number.

89318531 is a deficient number, since it is larger than the sum of its proper divisors (1291309).

89318531 is a wasteful number, since it uses less digits than its factorization.

89318531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285.

The product of its digits is 25920, while the sum is 38.

The square root of 89318531 is about 9450.8481629957. The cubic root of 89318531 is about 447.0065194644.

The spelling of 89318531 in words is "eighty-nine million, three hundred eighteen thousand, five hundred thirty-one".