13303020321 has 12 divisors (see below), whose sum is σ = 19216722772. Its totient is φ = 8868103776.

The previous prime is 13303020317. The next prime is 13303020383. The reversal of 13303020321 is 12302030331.

13303020321 is a `hidden beast` number, since 1 + 330 + 302 + 0 + 32 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3667634721 + 9635385600 = 60561^2 + 98160^2 .

It is not a de Polignac number, because 13303020321 - 2² = 13303020317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13303020294 and 13303020303.

It is not an unprimeable number, because it can be changed into a prime (13303020721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134715 + ... + 211551.

Almost surely, 2^13303020321 is an apocalyptic number.

It is an amenable number.

13303020321 is a deficient number, since it is larger than the sum of its proper divisors (5913702451).

13303020321 is a wasteful number, since it uses less digits than its factorization.

13303020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96080 (or 96077 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 13303020321 its reverse (12302030331), we get a palindrome (25605050652).

It can be divided in two parts, 133030 and 20321, that added together give a palindrome (153351).

The spelling of 13303020321 in words is "thirteen billion, three hundred three million, twenty thousand, three hundred twenty-one".