23323309 has 4 divisors (see below), whose sum is σ = 23477920. Its totient is φ = 23168700.

The previous prime is 23323297. The next prime is 23323331. The reversal of 23323309 is 90332332.

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 23323309 - 2⁵ = 23323277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23323009) 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, 77079 + ... + 77380.

It is an arithmetic number, because the mean of its divisors is an integer number (5869480).

Almost surely, 2^23323309 is an apocalyptic number.

It is an amenable number.

23323309 is a deficient number, since it is larger than the sum of its proper divisors (154611).

23323309 is a wasteful number, since it uses less digits than its factorization.

23323309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154610.

The product of its (nonzero) digits is 2916, while the sum is 25.

The square root of 23323309 is about 4829.4211868504. The cubic root of 23323309 is about 285.7130355541.

It can be divided in two parts, 23323 and 309, that added together give a palindrome (23632).

The spelling of 23323309 in words is "twenty-three million, three hundred twenty-three thousand, three hundred nine".