89111231 has 4 divisors (see below), whose sum is σ = 97212264. Its totient is φ = 81010200.

The previous prime is 89111227. The next prime is 89111251. The reversal of 89111231 is 13211198.

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

It is a cyclic number.

It is not a de Polignac number, because 89111231 - 2² = 89111227 is a prime.

It is a super-2 number, since 2×89111231² = 15881622980670722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89111231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89111221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4050500 + ... + 4050521.

It is an arithmetic number, because the mean of its divisors is an integer number (24303066).

Almost surely, 2^89111231 is an apocalyptic number.

89111231 is a deficient number, since it is larger than the sum of its proper divisors (8101033).

89111231 is a wasteful number, since it uses less digits than its factorization.

89111231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8101032.

The product of its digits is 432, while the sum is 26.

The square root of 89111231 is about 9439.8745224712. The cubic root of 89111231 is about 446.6604313998.

The spelling of 89111231 in words is "eighty-nine million, one hundred eleven thousand, two hundred thirty-one".