13021230320 has 40 divisors (see below), whose sum is σ = 34599270624. Its totient is φ = 4464421632.

The previous prime is 13021230293. The next prime is 13021230329. The reversal of 13021230320 is 2303212031.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021230329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11625539 + ... + 11626658.

Almost surely, 2^13021230320 is an apocalyptic number.

13021230320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13021230320 is an abundant number, since it is smaller than the sum of its proper divisors (21578040304).

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

13021230320 is a wasteful number, since it uses less digits than its factorization.

13021230320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23252217 (or 23252211 counting only the distinct ones).

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

Adding to 13021230320 its reverse (2303212031), we get a palindrome (15324442351).

The spelling of 13021230320 in words is "thirteen billion, twenty-one million, two hundred thirty thousand, three hundred twenty".