23913081 has 12 divisors (see below), whose sum is σ = 35732580. Its totient is φ = 15392160.

The previous prime is 23913061. The next prime is 23913091. The reversal of 23913081 is 18031932.

It can be written as a sum of positive squares in 2 ways, for example, as 14402025 + 9511056 = 3795^2 + 3084^2 .

It is not a de Polignac number, because 23913081 - 2⁵ = 23913049 is a prime.

It is a super-2 number, since 2×23913081² = 1143670885825122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23913011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45550 + ... + 46071.

It is an arithmetic number, because the mean of its divisors is an integer number (2977715).

Almost surely, 2^23913081 is an apocalyptic number.

It is an amenable number.

23913081 is a deficient number, since it is larger than the sum of its proper divisors (11819499).

23913081 is a wasteful number, since it uses less digits than its factorization.

23913081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91656 (or 91653 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 23913081 is about 4890.1003057197. The cubic root of 23913081 is about 288.1012737006.

The spelling of 23913081 in words is "twenty-three million, nine hundred thirteen thousand, eighty-one".