23137009 has 4 divisors (see below), whose sum is σ = 26442304. Its totient is φ = 19831716.

The previous prime is 23137001. The next prime is 23137031. The reversal of 23137009 is 90073132.

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 a cyclic number.

It is not a de Polignac number, because 23137009 - 2³ = 23137001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23137001) 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, 1652637 + ... + 1652650.

It is an arithmetic number, because the mean of its divisors is an integer number (6610576).

Almost surely, 2^23137009 is an apocalyptic number.

It is an amenable number.

23137009 is a deficient number, since it is larger than the sum of its proper divisors (3305295).

23137009 is an equidigital number, since it uses as much as digits as its factorization.

23137009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305294.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 23137009 is about 4810.0944897164. The cubic root of 23137009 is about 284.9502693571.

The spelling of 23137009 in words is "twenty-three million, one hundred thirty-seven thousand, nine".