13319311720 has 128 divisors (see below), whose sum is σ = 35297700480. Its totient is φ = 4459392000.

The previous prime is 13319311711. The next prime is 13319311721. The reversal of 13319311720 is 2711391331.

It is not an unprimeable number, because it can be changed into a prime (13319311721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2405355 + ... + 2410885.

It is an arithmetic number, because the mean of its divisors is an integer number (275763285).

Almost surely, 2^13319311720 is an apocalyptic number.

13319311720 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 13319311720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17648850240).

13319311720 is an abundant number, since it is smaller than the sum of its proper divisors (21978388760).

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

13319311720 is a wasteful number, since it uses less digits than its factorization.

13319311720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5987 (or 5983 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 31.

The spelling of 13319311720 in words is "thirteen billion, three hundred nineteen million, three hundred eleven thousand, seven hundred twenty".