13530305321 has 32 divisors (see below), whose sum is σ = 15586357248. Its totient is φ = 11634969600.

The previous prime is 13530305293. The next prime is 13530305329. The reversal of 13530305321 is 12350303531.

It is a cyclic number.

It is not a de Polignac number, because 13530305321 - 2¹⁰ = 13530304297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13530305329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12446840 + ... + 12447926.

It is an arithmetic number, because the mean of its divisors is an integer number (487073664).

Almost surely, 2^13530305321 is an apocalyptic number.

It is an amenable number.

13530305321 is a deficient number, since it is larger than the sum of its proper divisors (2056051927).

13530305321 is a wasteful number, since it uses less digits than its factorization.

13530305321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641.

The product of its (nonzero) digits is 4050, while the sum is 26.

Adding to 13530305321 its reverse (12350303531), we get a palindrome (25880608852).

The spelling of 13530305321 in words is "thirteen billion, five hundred thirty million, three hundred five thousand, three hundred twenty-one".