23115081 has 16 divisors (see below), whose sum is σ = 33884928. Its totient is φ = 13899600.

The previous prime is 23115041. The next prime is 23115097. The reversal of 23115081 is 18051132.

It is not a de Polignac number, because 23115081 - 2⁹ = 23114569 is a prime.

It is a super-2 number, since 2×23115081² = 1068613939273122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23115041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1650 + ... + 6996.

It is an arithmetic number, because the mean of its divisors is an integer number (2117808).

Almost surely, 2^23115081 is an apocalyptic number.

It is an amenable number.

23115081 is a deficient number, since it is larger than the sum of its proper divisors (10769847).

23115081 is a wasteful number, since it uses less digits than its factorization.

23115081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5492.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 23115081 is about 4807.8145762914. The cubic root of 23115081 is about 284.8602207758.

The spelling of 23115081 in words is "twenty-three million, one hundred fifteen thousand, eighty-one".