23306731091 has 4 divisors (see below), whose sum is σ = 26636264112. Its totient is φ = 19977198072.

The previous prime is 23306731073. The next prime is 23306731093. The reversal of 23306731091 is 19013760332.

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 23306731091 - 2²⁶ = 23239622227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23306731093) 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, 1664766500 + ... + 1664766513.

It is an arithmetic number, because the mean of its divisors is an integer number (6659066028).

Almost surely, 2^23306731091 is an apocalyptic number.

23306731091 is a deficient number, since it is larger than the sum of its proper divisors (3329533021).

23306731091 is an equidigital number, since it uses as much as digits as its factorization.

23306731091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329533020.

The product of its (nonzero) digits is 20412, while the sum is 35.

The spelling of 23306731091 in words is "twenty-three billion, three hundred six million, seven hundred thirty-one thousand, ninety-one".