23001881 has 4 divisors (see below), whose sum is σ = 26287872. Its totient is φ = 19715892.

The previous prime is 23001851. The next prime is 23001883. The reversal of 23001881 is 18810032.

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 not a de Polignac number, because 23001881 - 2¹⁸ = 22739737 is a prime.

It is a super-2 number, since 2×23001881² = 1058173059076322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23001883) 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, 1642985 + ... + 1642998.

It is an arithmetic number, because the mean of its divisors is an integer number (6571968).

Almost surely, 2^23001881 is an apocalyptic number.

It is an amenable number.

23001881 is a deficient number, since it is larger than the sum of its proper divisors (3285991).

23001881 is an equidigital number, since it uses as much as digits as its factorization.

23001881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285990.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 23001881 is about 4796.0276271098. The cubic root of 23001881 is about 284.3944504025.

The spelling of 23001881 in words is "twenty-three million, one thousand, eight hundred eighty-one".