23015881 has 8 divisors (see below), whose sum is σ = 26481600. Its totient is φ = 19594608.

The previous prime is 23015851. The next prime is 23015899. The reversal of 23015881 is 18851032.

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 23015881 - 2⁷ = 23015753 is a prime.

It is a super-2 number, since 2×23015881² = 1059461556412322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23015851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9991 + ... + 12076.

It is an arithmetic number, because the mean of its divisors is an integer number (3310200).

Almost surely, 2^23015881 is an apocalyptic number.

It is an amenable number.

23015881 is a deficient number, since it is larger than the sum of its proper divisors (3465719).

23015881 is a wasteful number, since it uses less digits than its factorization.

23015881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22223.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 23015881 is about 4797.4869463085. The cubic root of 23015881 is about 284.4521372036.

The spelling of 23015881 in words is "twenty-three million, fifteen thousand, eight hundred eighty-one".