1320320313020 has 12 divisors (see below), whose sum is σ = 2772672657384. Its totient is φ = 528128125200.

The previous prime is 1320320312957. The next prime is 1320320313089. The reversal of 1320320313020 is 203130230231.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 66016015651 = 1320320313020 / (1 + 3 + 2 + 0 + 3 + 2 + 0 + 3 + 1 + 3 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1320320312983 and 1320320313001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33008007806 + ... + 33008007845.

It is an arithmetic number, because the mean of its divisors is an integer number (231056054782).

Almost surely, 2^{1320320313020} is an apocalyptic number.

1320320313020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320320313020 is an abundant number, since it is smaller than the sum of its proper divisors (1452352344364).

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

1320320313020 is a wasteful number, since it uses less digits than its factorization.

1320320313020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66016015660 (or 66016015658 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 1320320313020 its reverse (203130230231), we get a palindrome (1523450543251).

The spelling of 1320320313020 in words is "one trillion, three hundred twenty billion, three hundred twenty million, three hundred thirteen thousand, twenty".