23056321 has 4 divisors (see below), whose sum is σ = 23334192. Its totient is φ = 22778452.

The previous prime is 23056283. The next prime is 23056337. The reversal of 23056321 is 12365032.

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 a de Polignac number, because none of the positive numbers 2^k-23056321 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23056292 and 23056301.

It is not an unprimeable number, because it can be changed into a prime (23056351) 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, 138811 + ... + 138976.

It is an arithmetic number, because the mean of its divisors is an integer number (5833548).

Almost surely, 2^23056321 is an apocalyptic number.

It is an amenable number.

23056321 is a deficient number, since it is larger than the sum of its proper divisors (277871).

23056321 is an equidigital number, since it uses as much as digits as its factorization.

23056321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277870.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 23056321 is about 4801.6998031947. The cubic root of 23056321 is about 284.6186383794.

The spelling of 23056321 in words is "twenty-three million, fifty-six thousand, three hundred twenty-one".