23162081 has 4 divisors (see below), whose sum is σ = 24169152. Its totient is φ = 22155012.

The previous prime is 23162071. The next prime is 23162093. The reversal of 23162081 is 18026132.

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 23162081 - 2⁶ = 23162017 is a prime.

It is a super-2 number, since 2×23162081² = 1072963992501122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1007047 = 23162081 / (2 + 3 + 1 + 6 + 2 + 0 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23162011) 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, 503501 + ... + 503546.

It is an arithmetic number, because the mean of its divisors is an integer number (6042288).

Almost surely, 2^23162081 is an apocalyptic number.

It is an amenable number.

23162081 is a deficient number, since it is larger than the sum of its proper divisors (1007071).

23162081 is a wasteful number, since it uses less digits than its factorization.

23162081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007070.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 23162081 is about 4812.6999698714. The cubic root of 23162081 is about 285.0531592642.

The spelling of 23162081 in words is "twenty-three million, one hundred sixty-two thousand, eighty-one".