1331313022320 has 40 divisors (see below), whose sum is σ = 4127070369936. Its totient is φ = 355016805888.

The previous prime is 1331313022289. The next prime is 1331313022327. The reversal of 1331313022320 is 232203131331.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331313022327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2773568557 + ... + 2773569036.

Almost surely, 2^{1331313022320} is an apocalyptic number.

1331313022320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331313022320 is an abundant number, since it is smaller than the sum of its proper divisors (2795757347616).

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

1331313022320 is a wasteful number, since it uses less digits than its factorization.

1331313022320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5547137609 (or 5547137603 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 1331313022320 its reverse (232203131331), we get a palindrome (1563516153651).

The spelling of 1331313022320 in words is "one trillion, three hundred thirty-one billion, three hundred thirteen million, twenty-two thousand, three hundred twenty".