13331031320 has 16 divisors (see below), whose sum is σ = 29994820560. Its totient is φ = 5332412512.

The previous prime is 13331031299. The next prime is 13331031331. The reversal of 13331031320 is 2313013331.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13331031292 and 13331031301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166637852 + ... + 166637931.

It is an arithmetic number, because the mean of its divisors is an integer number (1874676285).

Almost surely, 2^13331031320 is an apocalyptic number.

13331031320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13331031320 is an abundant number, since it is smaller than the sum of its proper divisors (16663789240).

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

13331031320 is a wasteful number, since it uses less digits than its factorization.

13331031320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333275794 (or 333275790 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 13331031320 its reverse (2313013331), we get a palindrome (15644044651).

The spelling of 13331031320 in words is "thirteen billion, three hundred thirty-one million, thirty-one thousand, three hundred twenty".