1320311301320 has 64 divisors (see below), whose sum is σ = 3242893631040. Its totient is φ = 479797715200.

The previous prime is 1320311301313. The next prime is 1320311301341. The reversal of 1320311301320 is 231031130231.

It is a super-3 number, since 3×1320311301320³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1320311301292 and 1320311301301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315011 + ... + 1655250.

It is an arithmetic number, because the mean of its divisors is an integer number (50670212985).

Almost surely, 2^{1320311301320} is an apocalyptic number.

1320311301320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320311301320 is an abundant number, since it is smaller than the sum of its proper divisors (1922582329720).

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

1320311301320 is a wasteful number, since it uses less digits than its factorization.

1320311301320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971806 (or 1971802 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1320311301320 its reverse (231031130231), we get a palindrome (1551342431551).

The spelling of 1320311301320 in words is "one trillion, three hundred twenty billion, three hundred eleven million, three hundred one thousand, three hundred twenty".