23117563 has 24 divisors (see below), whose sum is σ = 28383264. Its totient is φ = 18748800.

The previous prime is 23117551. The next prime is 23117573. The reversal of 23117563 is 36571132.

It is not a de Polignac number, because 23117563 - 2⁹ = 23117051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23117513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74178 + ... + 74488.

It is an arithmetic number, because the mean of its divisors is an integer number (1182636).

Almost surely, 2^23117563 is an apocalyptic number.

23117563 is a deficient number, since it is larger than the sum of its proper divisors (5265701).

23117563 is a wasteful number, since it uses less digits than its factorization.

23117563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 396 counting only the distinct ones).

The product of its digits is 3780, while the sum is 28.

The square root of 23117563 is about 4808.0726907983. The cubic root of 23117563 is about 284.8704161076.

Adding to 23117563 its reverse (36571132), we get a palindrome (59688695).

The spelling of 23117563 in words is "twenty-three million, one hundred seventeen thousand, five hundred sixty-three".