1331313120321 has 8 divisors (see below), whose sum is σ = 1775245180704. Its totient is φ = 887461570080.

The previous prime is 1331313120287. The next prime is 1331313120359. The reversal of 1331313120321 is 1230213131331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1331313120321 - 2²⁶ = 1331246011457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331313120291 and 1331313120300.

It is not an unprimeable number, because it can be changed into a prime (1331313120821) 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, 20088940 + ... + 20155101.

It is an arithmetic number, because the mean of its divisors is an integer number (221905647588).

Almost surely, 2^{1331313120321} is an apocalyptic number.

It is an amenable number.

1331313120321 is a deficient number, since it is larger than the sum of its proper divisors (443932060383).

1331313120321 is a wasteful number, since it uses less digits than its factorization.

1331313120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40255071.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1331313120321 its reverse (1230213131331), we get a palindrome (2561526251652).

The spelling of 1331313120321 in words is "one trillion, three hundred thirty-one billion, three hundred thirteen million, one hundred twenty thousand, three hundred twenty-one".