13321303320 has 192 divisors, whose sum is σ = 43665000480. Its totient is φ = 3249512448.

The previous prime is 13321303301. The next prime is 13321303327. The reversal of 13321303320 is 2330312331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321303327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2288734 + ... + 2294546.

Almost surely, 2^13321303320 is an apocalyptic number.

13321303320 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 13321303320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21832500240).

13321303320 is an abundant number, since it is smaller than the sum of its proper divisors (30343697160).

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

13321303320 is a wasteful number, since it uses less digits than its factorization.

13321303320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5966 (or 5949 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 13321303320 its reverse (2330312331), we get a palindrome (15651615651).

The spelling of 13321303320 in words is "thirteen billion, three hundred twenty-one million, three hundred three thousand, three hundred twenty".