13430423321 has 4 divisors (see below), whose sum is σ = 15349055232. Its totient is φ = 11511791412.

The previous prime is 13430423269. The next prime is 13430423329. The reversal of 13430423321 is 12332403431.

13430423321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12332403431 = 8101 ⋅1522331.

It is a cyclic number.

It is not a de Polignac number, because 13430423321 - 2⁶ = 13430423257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13430423329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 959315945 + ... + 959315958.

It is an arithmetic number, because the mean of its divisors is an integer number (3837263808).

Almost surely, 2^13430423321 is an apocalyptic number.

It is an amenable number.

13430423321 is a deficient number, since it is larger than the sum of its proper divisors (1918631911).

13430423321 is an equidigital number, since it uses as much as digits as its factorization.

13430423321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918631910.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 13430423321 its reverse (12332403431), we get a palindrome (25762826752).

The spelling of 13430423321 in words is "thirteen billion, four hundred thirty million, four hundred twenty-three thousand, three hundred twenty-one".