23056881 has 4 divisors (see below), whose sum is σ = 30742512. Its totient is φ = 15371252.

The previous prime is 23056877. The next prime is 23056889. The reversal of 23056881 is 18865032.

It is a happy number.

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 23056881 - 2² = 23056877 is a prime.

It is a super-2 number, since 2×23056881² = 1063239522896322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23056889) 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, 3842811 + ... + 3842816.

It is an arithmetic number, because the mean of its divisors is an integer number (7685628).

Almost surely, 2^23056881 is an apocalyptic number.

It is an amenable number.

23056881 is a deficient number, since it is larger than the sum of its proper divisors (7685631).

23056881 is an equidigital number, since it uses as much as digits as its factorization.

23056881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7685630.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 23056881 is about 4801.7581155239. The cubic root of 23056881 is about 284.6209426665.

The spelling of 23056881 in words is "twenty-three million, fifty-six thousand, eight hundred eighty-one".