13320302321 has 4 divisors (see below), whose sum is σ = 13325394852. Its totient is φ = 13315209792.

The previous prime is 13320302287. The next prime is 13320302323. The reversal of 13320302321 is 12320302331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12320302331 = 3533 ⋅3487207.

It can be written as a sum of positive squares in 2 ways, for example, as 9151792225 + 4168510096 = 95665^2 + 64564^2 .

It is a cyclic number.

It is not a de Polignac number, because 13320302321 - 2⁶ = 13320302257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13320302293 and 13320302302.

It is not an unprimeable number, because it can be changed into a prime (13320302323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2542340 + ... + 2547573.

It is an arithmetic number, because the mean of its divisors is an integer number (3331348713).

Almost surely, 2^13320302321 is an apocalyptic number.

It is an amenable number.

13320302321 is a deficient number, since it is larger than the sum of its proper divisors (5092531).

13320302321 is an equidigital number, since it uses as much as digits as its factorization.

13320302321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5092530.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 13320302321 its reverse (12320302331), we get a palindrome (25640604652).

The spelling of 13320302321 in words is "thirteen billion, three hundred twenty million, three hundred two thousand, three hundred twenty-one".