13424240321 has 4 divisors (see below), whose sum is σ = 13426672944. Its totient is φ = 13421807700.

The previous prime is 13424240299. The next prime is 13424240339. The reversal of 13424240321 is 12304242431.

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 13424240321 - 2¹⁴ = 13424223937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13424240351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208015 + ... + 1219076.

It is an arithmetic number, because the mean of its divisors is an integer number (3356668236).

Almost surely, 2^13424240321 is an apocalyptic number.

It is an amenable number.

13424240321 is a deficient number, since it is larger than the sum of its proper divisors (2432623).

13424240321 is an equidigital number, since it uses as much as digits as its factorization.

13424240321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432622.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 13424240321 its reverse (12304242431), we get a palindrome (25728482752).

The spelling of 13424240321 in words is "thirteen billion, four hundred twenty-four million, two hundred forty thousand, three hundred twenty-one".