23713681 has 4 divisors (see below), whose sum is σ = 23999472. Its totient is φ = 23427892.

The previous prime is 23713673. The next prime is 23713699. The reversal of 23713681 is 18631732.

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 23713681 - 2³ = 23713673 is a prime.

It is a super-2 number, since 2×23713681² = 1124677333139522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23713981) 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, 142771 + ... + 142936.

It is an arithmetic number, because the mean of its divisors is an integer number (5999868).

Almost surely, 2^23713681 is an apocalyptic number.

It is an amenable number.

23713681 is a deficient number, since it is larger than the sum of its proper divisors (285791).

23713681 is an equidigital number, since it uses as much as digits as its factorization.

23713681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285790.

The product of its digits is 6048, while the sum is 31.

The square root of 23713681 is about 4869.6694959720. The cubic root of 23713681 is about 287.2982569547.

The spelling of 23713681 in words is "twenty-three million, seven hundred thirteen thousand, six hundred eighty-one".