23127681 has 4 divisors (see below), whose sum is σ = 30836912. Its totient is φ = 15418452.

The previous prime is 23127677. The next prime is 23127721. The reversal of 23127681 is 18672132.

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 not a de Polignac number, because 23127681 - 2² = 23127677 is a prime.

It is a super-2 number, since 2×23127681² = 1069779256875522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23127661) 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, 3854611 + ... + 3854616.

It is an arithmetic number, because the mean of its divisors is an integer number (7709228).

Almost surely, 2^23127681 is an apocalyptic number.

It is an amenable number.

23127681 is a deficient number, since it is larger than the sum of its proper divisors (7709231).

23127681 is an equidigital number, since it uses as much as digits as its factorization.

23127681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7709230.

The product of its digits is 4032, while the sum is 30.

The square root of 23127681 is about 4809.1247644452. The cubic root of 23127681 is about 284.9119703503.

The spelling of 23127681 in words is "twenty-three million, one hundred twenty-seven thousand, six hundred eighty-one".