23011563 has 8 divisors (see below), whose sum is σ = 30750208. Its totient is φ = 15306984.

The previous prime is 23011561. The next prime is 23011577. The reversal of 23011563 is 36511032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23011563 - 2¹ = 23011561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23011561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6895 + ... + 9672.

It is an arithmetic number, because the mean of its divisors is an integer number (3843776).

Almost surely, 2^23011563 is an apocalyptic number.

23011563 is a deficient number, since it is larger than the sum of its proper divisors (7738645).

23011563 is a wasteful number, since it uses less digits than its factorization.

23011563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17033.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 23011563 is about 4797.0368979194. The cubic root of 23011563 is about 284.4343474414.

Adding to 23011563 its reverse (36511032), we get a palindrome (59522595).

The spelling of 23011563 in words is "twenty-three million, eleven thousand, five hundred sixty-three".