23312621 has 4 divisors (see below), whose sum is σ = 23339232. Its totient is φ = 23286012.

The previous prime is 23312581. The next prime is 23312657. The reversal of 23312621 is 12621332.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23312621 - 2⁶ = 23312557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23312593 and 23312602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23312671) 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, 11945 + ... + 13758.

It is an arithmetic number, because the mean of its divisors is an integer number (5834808).

Almost surely, 2^23312621 is an apocalyptic number.

It is an amenable number.

23312621 is a deficient number, since it is larger than the sum of its proper divisors (26611).

23312621 is an equidigital number, since it uses as much as digits as its factorization.

23312621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26610.

The product of its digits is 432, while the sum is 20.

The square root of 23312621 is about 4828.3145092258. The cubic root of 23312621 is about 285.6693858372.

Adding to 23312621 its reverse (12621332), we get a palindrome (35933953).

The spelling of 23312621 in words is "twenty-three million, three hundred twelve thousand, six hundred twenty-one".