13324312444321 has 16 divisors (see below), whose sum is σ = 13439497862736. Its totient is φ = 13209577675776.

The previous prime is 13324312444307. The next prime is 13324312444361. The reversal of 13324312444321 is 12344421342331.

It can be written as a sum of positive squares in 8 ways, for example, as 8993335234321 + 4330977210000 = 2998889^2 + 2081100^2 .

It is a cyclic number.

It is not a de Polignac number, because 13324312444321 - 2⁷ = 13324312444193 is a prime.

It is a super-2 number, since 2×13324312444321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13324312444361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500280021 + ... + 500306653.

It is an arithmetic number, because the mean of its divisors is an integer number (839968616421).

Almost surely, 2^{13324312444321} is an apocalyptic number.

It is an amenable number.

13324312444321 is a deficient number, since it is larger than the sum of its proper divisors (115185418415).

13324312444321 is a wasteful number, since it uses less digits than its factorization.

13324312444321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34932.

The product of its digits is 165888, while the sum is 37.

Adding to 13324312444321 its reverse (12344421342331), we get a palindrome (25668733786652).

The spelling of 13324312444321 in words is "thirteen trillion, three hundred twenty-four billion, three hundred twelve million, four hundred forty-four thousand, three hundred twenty-one".