23956681 has 4 divisors (see below), whose sum is σ = 27379072. Its totient is φ = 20534292.

The previous prime is 23956661. The next prime is 23956703. The reversal of 23956681 is 18665932.

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 23956681 - 2¹¹ = 23954633 is a prime.

It is a super-2 number, since 2×23956681² = 1147845129071522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23956601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711185 + ... + 1711198.

It is an arithmetic number, because the mean of its divisors is an integer number (6844768).

Almost surely, 2^23956681 is an apocalyptic number.

It is an amenable number.

23956681 is a deficient number, since it is larger than the sum of its proper divisors (3422391).

23956681 is an equidigital number, since it uses as much as digits as its factorization.

23956681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3422390.

The product of its digits is 77760, while the sum is 40.

The square root of 23956681 is about 4894.5562618076. The cubic root of 23956681 is about 288.2762628498.

The spelling of 23956681 in words is "twenty-three million, nine hundred fifty-six thousand, six hundred eighty-one".