23115009 has 4 divisors (see below), whose sum is σ = 30820016. Its totient is φ = 15410004.

The previous prime is 23114999. The next prime is 23115041. The reversal of 23115009 is 90051132.

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.

It is not a de Polignac number, because 23115009 - 2⁷ = 23114881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23115109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3852499 + ... + 3852504.

It is an arithmetic number, because the mean of its divisors is an integer number (7705004).

Almost surely, 2^23115009 is an apocalyptic number.

It is an amenable number.

23115009 is a deficient number, since it is larger than the sum of its proper divisors (7705007).

23115009 is an equidigital number, since it uses as much as digits as its factorization.

23115009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7705006.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 23115009 is about 4807.8070884760. The cubic root of 23115009 is about 284.8599250099.

The spelling of 23115009 in words is "twenty-three million, one hundred fifteen thousand, nine".