23881 has 8 divisors (see below), whose sum is σ = 28224. Its totient is φ = 19920.

The previous prime is 23879. The next prime is 23887. The reversal of 23881 is 18832.

23881 = T₅₄ + T₅₅ + ... + T₆₆.

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 23881 - 2¹ = 23879 is a prime.

It is a super-2 number, since 2×23881² = 1140604322, which contains 22 as substring.

It is a Duffinian number.

23881 is a lucky number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (23887) 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, 60 + ... + 226.

It is an arithmetic number, because the mean of its divisors is an integer number (3528).

2²³⁸⁸¹ is an apocalyptic number.

It is an amenable number.

23881 is a deficient number, since it is larger than the sum of its proper divisors (4343).

23881 is a wasteful number, since it uses less digits than its factorization.

23881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191.

The product of its digits is 384, while the sum is 22.

The square root of 23881 is about 154.5347857280. The cubic root of 23881 is about 28.7972380325.

It can be divided in two parts, 2 and 3881, that added together give a palindrome (3883).

The spelling of 23881 in words is "twenty-three thousand, eight hundred eighty-one".