13332431220 has 144 divisors (see below), whose sum is σ = 40580409408. Its totient is φ = 3268177920.

The previous prime is 13332431207. The next prime is 13332431243. The reversal of 13332431220 is 2213423331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 736680 + ... + 754560.

Almost surely, 2^13332431220 is an apocalyptic number.

13332431220 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 13332431220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20290204704).

13332431220 is an abundant number, since it is smaller than the sum of its proper divisors (27247978188).

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

13332431220 is a wasteful number, since it uses less digits than its factorization.

13332431220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17970 (or 17951 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 13332431220 its reverse (2213423331), we get a palindrome (15545854551).

The spelling of 13332431220 in words is "thirteen billion, three hundred thirty-two million, four hundred thirty-one thousand, two hundred twenty".