13001232320 has 56 divisors (see below), whose sum is σ = 31679199024. Its totient is φ = 5079545856.

The previous prime is 13001232313. The next prime is 13001232323. The reversal of 13001232320 is 2323210031.

13001232320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13001232320² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001232323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458669 + ... + 486188.

Almost surely, 2^13001232320 is an apocalyptic number.

13001232320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13001232320 is an abundant number, since it is smaller than the sum of its proper divisors (18677966704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13001232320 is an equidigital number, since it uses as much as digits as its factorization.

13001232320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944917 (or 944907 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 13001232320 its reverse (2323210031), we get a palindrome (15324442351).

The spelling of 13001232320 in words is "thirteen billion, one million, two hundred thirty-two thousand, three hundred twenty".