23320013 has 4 divisors (see below), whose sum is σ = 23344860. Its totient is φ = 23295168.

The previous prime is 23319983. The next prime is 23320019. The reversal of 23320013 is 31002332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20268004 + 3052009 = 4502^2 + 1747^2 .

It is a cyclic number.

It is not a de Polignac number, because 23320013 - 2⁶ = 23319949 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 23320013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23320019) 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, 10958 + ... + 12911.

It is an arithmetic number, because the mean of its divisors is an integer number (5836215).

Almost surely, 2^23320013 is an apocalyptic number.

It is an amenable number.

23320013 is a deficient number, since it is larger than the sum of its proper divisors (24847).

23320013 is an equidigital number, since it uses as much as digits as its factorization.

23320013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24846.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 23320013 is about 4829.0799330721. The cubic root of 23320013 is about 285.6995761356.

Adding to 23320013 its reverse (31002332), we get a palindrome (54322345).

The spelling of 23320013 in words is "twenty-three million, three hundred twenty thousand, thirteen".