23140563 has 8 divisors (see below), whose sum is σ = 30898176. Its totient is φ = 15405000.

The previous prime is 23140531. The next prime is 23140571. The reversal of 23140563 is 36504132.

It is a happy number.

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

It is not a de Polignac number, because 23140563 - 2⁵ = 23140531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23140163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2883 + ... + 7388.

It is an arithmetic number, because the mean of its divisors is an integer number (3862272).

Almost surely, 2^23140563 is an apocalyptic number.

23140563 is a deficient number, since it is larger than the sum of its proper divisors (7757613).

23140563 is a wasteful number, since it uses less digits than its factorization.

23140563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11025.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 23140563 is about 4810.4639069429. The cubic root of 23140563 is about 284.9648587019.

Adding to 23140563 its reverse (36504132), we get a palindrome (59644695).

The spelling of 23140563 in words is "twenty-three million, one hundred forty thousand, five hundred sixty-three".