1313201223320 has 128 divisors (see below), whose sum is σ = 3482135654400. Its totient is φ = 436382125056.

The previous prime is 1313201223317. The next prime is 1313201223331. The reversal of 1313201223320 is 233221023131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 871076 + ... + 1839884.

It is an arithmetic number, because the mean of its divisors is an integer number (27204184800).

Almost surely, 2^{1313201223320} is an apocalyptic number.

1313201223320 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 1313201223320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1741067827200).

1313201223320 is an abundant number, since it is smaller than the sum of its proper divisors (2168934431080).

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

1313201223320 is a wasteful number, since it uses less digits than its factorization.

1313201223320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968977 (or 968973 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1313201223320 its reverse (233221023131), we get a palindrome (1546422246451).

The spelling of 1313201223320 in words is "one trillion, three hundred thirteen billion, two hundred one million, two hundred twenty-three thousand, three hundred twenty".