23031809 has 8 divisors (see below), whose sum is σ = 24256320. Its totient is φ = 21825936.

The previous prime is 23031803. The next prime is 23031823. The reversal of 23031809 is 90813032.

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 23031809 - 2⁴ = 23031793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23031803) 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, 2087 + ... + 7100.

It is an arithmetic number, because the mean of its divisors is an integer number (3032040).

Almost surely, 2^23031809 is an apocalyptic number.

It is an amenable number.

23031809 is a deficient number, since it is larger than the sum of its proper divisors (1224511).

23031809 is a wasteful number, since it uses less digits than its factorization.

23031809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9319.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 23031809 is about 4799.1466949865. The cubic root of 23031809 is about 284.5177398612.

The spelling of 23031809 in words is "twenty-three million, thirty-one thousand, eight hundred nine".