13311312220 has 24 divisors (see below), whose sum is σ = 29425006800. Its totient is φ = 5044286592.

The previous prime is 13311312197. The next prime is 13311312247. The reversal of 13311312220 is 2221311331.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

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, 17514505 + ... + 17515264.

It is an arithmetic number, because the mean of its divisors is an integer number (1226041950).

Almost surely, 2^13311312220 is an apocalyptic number.

13311312220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13311312220 is an abundant number, since it is smaller than the sum of its proper divisors (16113694580).

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

13311312220 is a wasteful number, since it uses less digits than its factorization.

13311312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35029797 (or 35029795 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13311312220 its reverse (2221311331), we get a palindrome (15532623551).

The spelling of 13311312220 in words is "thirteen billion, three hundred eleven million, three hundred twelve thousand, two hundred twenty".