23036681 has 4 divisors (see below), whose sum is σ = 23659332. Its totient is φ = 22414032.

The previous prime is 23036669. The next prime is 23036723. The reversal of 23036681 is 18663032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15523600 + 7513081 = 3940^2 + 2741^2 .

It is a cyclic number.

It is not a de Polignac number, because 23036681 - 2⁶ = 23036617 is a prime.

It is a super-2 number, since 2×23036681² = 1061377342991522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23036281) 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, 311270 + ... + 311343.

It is an arithmetic number, because the mean of its divisors is an integer number (5914833).

Almost surely, 2^23036681 is an apocalyptic number.

It is an amenable number.

23036681 is a deficient number, since it is larger than the sum of its proper divisors (622651).

23036681 is an equidigital number, since it uses as much as digits as its factorization.

23036681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622650.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 23036681 is about 4799.6542583815. The cubic root of 23036681 is about 284.5378001280.

The spelling of 23036681 in words is "twenty-three million, thirty-six thousand, six hundred eighty-one".