13311232320 has 112 divisors (see below), whose sum is σ = 42497215488. Its totient is φ = 3530004480.

The previous prime is 13311232213. The next prime is 13311232351. The reversal of 13311232320 is 2323211331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135457 + ... + 212063.

It is an arithmetic number, because the mean of its divisors is an integer number (379439424).

Almost surely, 2^13311232320 is an apocalyptic number.

13311232320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13311232320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21248607744).

13311232320 is an abundant number, since it is smaller than the sum of its proper divisors (29185983168).

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

13311232320 is a wasteful number, since it uses less digits than its factorization.

13311232320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76808 (or 76798 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13311232320 its reverse (2323211331), we get a palindrome (15634443651).

The spelling of 13311232320 in words is "thirteen billion, three hundred eleven million, two hundred thirty-two thousand, three hundred twenty".