13530040321 has 4 divisors (see below), whose sum is σ = 15462903232. Its totient is φ = 11597177412.

The previous prime is 13530040309. The next prime is 13530040331. The reversal of 13530040321 is 12304003531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13530040321 - 2⁵ = 13530040289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13530040292 and 13530040301.

It is not an unprimeable number, because it can be changed into a prime (13530040301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966431445 + ... + 966431458.

It is an arithmetic number, because the mean of its divisors is an integer number (3865725808).

Almost surely, 2^13530040321 is an apocalyptic number.

It is an amenable number.

13530040321 is a deficient number, since it is larger than the sum of its proper divisors (1932862911).

13530040321 is an equidigital number, since it uses as much as digits as its factorization.

13530040321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932862910.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 13530040321 its reverse (12304003531), we get a palindrome (25834043852).

The spelling of 13530040321 in words is "thirteen billion, five hundred thirty million, forty thousand, three hundred twenty-one".