23063581 has 4 divisors (see below), whose sum is σ = 23245312. Its totient is φ = 22881852.

The previous prime is 23063567. The next prime is 23063629. The reversal of 23063581 is 18536032.

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 23063581 - 2⁹ = 23063069 is a prime.

It is a super-2 number, since 2×23063581² = 1063857537087122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23063501) 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, 90675 + ... + 90928.

It is an arithmetic number, because the mean of its divisors is an integer number (5811328).

Almost surely, 2^23063581 is an apocalyptic number.

It is an amenable number.

23063581 is a deficient number, since it is larger than the sum of its proper divisors (181731).

23063581 is a wasteful number, since it uses less digits than its factorization.

23063581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181730.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 23063581 is about 4802.4557259802. The cubic root of 23063581 is about 284.6485089222.

The spelling of 23063581 in words is "twenty-three million, sixty-three thousand, five hundred eighty-one".