23204309 has 8 divisors (see below), whose sum is σ = 24288000. Its totient is φ = 22126896.

The previous prime is 23204299. The next prime is 23204327. The reversal of 23204309 is 90340232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23204309 - 2⁸ = 23204053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23204329) 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 7 ways as a sum of consecutive naturals, for example, 7067 + ... + 9815.

It is an arithmetic number, because the mean of its divisors is an integer number (3036000).

Almost surely, 2^23204309 is an apocalyptic number.

It is an amenable number.

23204309 is a deficient number, since it is larger than the sum of its proper divisors (1083691).

23204309 is a wasteful number, since it uses less digits than its factorization.

23204309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 23204309 is about 4817.0851144650. The cubic root of 23204309 is about 285.2262858639.

The spelling of 23204309 in words is "twenty-three million, two hundred four thousand, three hundred nine".