23321120013 has 36 divisors (see below), whose sum is σ = 35914450260. Its totient is φ = 14579582976.

The previous prime is 23321120003. The next prime is 23321120033. The reversal of 23321120013 is 31002112332.

It can be written as a sum of positive squares in 6 ways, for example, as 664247529 + 22656872484 = 25773^2 + 150522^2 .

It is not a de Polignac number, because 23321120013 - 2⁹ = 23321119501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23321120003) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 704293 + ... + 736661.

Almost surely, 2^23321120013 is an apocalyptic number.

It is an amenable number.

23321120013 is a deficient number, since it is larger than the sum of its proper divisors (12593330247).

23321120013 is a wasteful number, since it uses less digits than its factorization.

23321120013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32686 (or 32666 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23321120013 its reverse (31002112332), we get a palindrome (54323232345).

The spelling of 23321120013 in words is "twenty-three billion, three hundred twenty-one million, one hundred twenty thousand, thirteen".