90231113 has 4 divisors (see below), whose sum is σ = 103121280. Its totient is φ = 77340948.

The previous prime is 90231109. The next prime is 90231179. The reversal of 90231113 is 31113209.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31113209 = 43 ⋅723563.

It is a cyclic number.

It is not a de Polignac number, because 90231113 - 2² = 90231109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90231103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6445073 + ... + 6445086.

It is an arithmetic number, because the mean of its divisors is an integer number (25780320).

Almost surely, 2^90231113 is an apocalyptic number.

It is an amenable number.

90231113 is a deficient number, since it is larger than the sum of its proper divisors (12890167).

90231113 is a wasteful number, since it uses less digits than its factorization.

90231113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12890166.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 90231113 is about 9499.0058953556. The cubic root of 90231113 is about 448.5237434024.

The spelling of 90231113 in words is "ninety million, two hundred thirty-one thousand, one hundred thirteen".