13231133220 has 24 divisors (see below), whose sum is σ = 37047173184. Its totient is φ = 3528302176.

The previous prime is 13231133213. The next prime is 13231133263. The reversal of 13231133220 is 2233113231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110259384 + ... + 110259503.

It is an arithmetic number, because the mean of its divisors is an integer number (1543632216).

Almost surely, 2^13231133220 is an apocalyptic number.

13231133220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13231133220 is an abundant number, since it is smaller than the sum of its proper divisors (23816039964).

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

13231133220 is a wasteful number, since it uses less digits than its factorization.

13231133220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220518899 (or 220518897 counting only the distinct ones).

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

Adding to 13231133220 its reverse (2233113231), we get a palindrome (15464246451).

The spelling of 13231133220 in words is "thirteen billion, two hundred thirty-one million, one hundred thirty-three thousand, two hundred twenty".