1320344203020 has 384 divisors, whose sum is σ = 4122888118272. Its totient is φ = 314225049600.

The previous prime is 1320344202967. The next prime is 1320344203033. The reversal of 1320344203020 is 203024430231.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1332334725 + ... + 1332335715.

It is an arithmetic number, because the mean of its divisors is an integer number (10736687808).

Almost surely, 2^{1320344203020} is an apocalyptic number.

1320344203020 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 1320344203020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2061444059136).

1320344203020 is an abundant number, since it is smaller than the sum of its proper divisors (2802543915252).

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

1320344203020 is a wasteful number, since it uses less digits than its factorization.

1320344203020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921 (or 1919 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 1320344203020 its reverse (203024430231), we get a palindrome (1523368633251).

The spelling of 1320344203020 in words is "one trillion, three hundred twenty billion, three hundred forty-four million, two hundred three thousand, twenty".