23005623 has 4 divisors (see below), whose sum is σ = 30674168. Its totient is φ = 15337080.

The previous prime is 23005621. The next prime is 23005639. The reversal of 23005623 is 32650032.

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

It is not a de Polignac number, because 23005623 - 2¹ = 23005621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23005623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23005621) 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, 3834268 + ... + 3834273.

It is an arithmetic number, because the mean of its divisors is an integer number (7668542).

Almost surely, 2^23005623 is an apocalyptic number.

23005623 is a deficient number, since it is larger than the sum of its proper divisors (7668545).

23005623 is an equidigital number, since it uses as much as digits as its factorization.

23005623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7668544.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 23005623 is about 4796.4177257616. The cubic root of 23005623 is about 284.4098715519.

Adding to 23005623 its reverse (32650032), we get a palindrome (55655655).

The spelling of 23005623 in words is "twenty-three million, five thousand, six hundred twenty-three".