23321881 has 4 divisors (see below), whose sum is σ = 25442064. Its totient is φ = 21201700.

The previous prime is 23321833. The next prime is 23321939. The reversal of 23321881 is 18812332.

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 23321881 - 2¹¹ = 23319833 is a prime.

It is a super-2 number, since 2×23321881² = 1087820266756322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23321681) 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, 1060075 + ... + 1060096.

It is an arithmetic number, because the mean of its divisors is an integer number (6360516).

Almost surely, 2^23321881 is an apocalyptic number.

It is an amenable number.

23321881 is a deficient number, since it is larger than the sum of its proper divisors (2120183).

23321881 is a wasteful number, since it uses less digits than its factorization.

23321881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120182.

The product of its digits is 2304, while the sum is 28.

The square root of 23321881 is about 4829.2733407833. The cubic root of 23321881 is about 285.7072043840.

The spelling of 23321881 in words is "twenty-three million, three hundred twenty-one thousand, eight hundred eighty-one".