23521623 has 8 divisors (see below), whose sum is σ = 31830528. Its totient is φ = 15446904.

The previous prime is 23521621. The next prime is 23521643. The reversal of 23521623 is 32612532.

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

It is not a de Polignac number, because 23521623 - 2¹ = 23521621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23521593 and 23521602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23521621) 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, 58311 + ... + 58712.

It is an arithmetic number, because the mean of its divisors is an integer number (3978816).

Almost surely, 2^23521623 is an apocalyptic number.

23521623 is a deficient number, since it is larger than the sum of its proper divisors (8308905).

23521623 is a wasteful number, since it uses less digits than its factorization.

23521623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117093.

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

The square root of 23521623 is about 4849.9095867861. The cubic root of 23521623 is about 286.5205404228.

Subtracting 23521623 from its reverse (32612532), we obtain a palindrome (9090909).

The spelling of 23521623 in words is "twenty-three million, five hundred twenty-one thousand, six hundred twenty-three".