1324240321 has 4 divisors (see below), whose sum is σ = 1393937200. Its totient is φ = 1254543444.

The previous prime is 1324240289. The next prime is 1324240339. The reversal of 1324240321 is 1230424231.

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: 1230424231 = 43 ⋅28614517.

It is a cyclic number.

It is not a de Polignac number, because 1324240321 - 2⁵ = 1324240289 is a prime.

It is a super-2 number, since 2×1324240321² = 3507224855524366082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1324240292 and 1324240301.

It is not an unprimeable number, because it can be changed into a prime (1324040321) 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, 34848411 + ... + 34848448.

It is an arithmetic number, because the mean of its divisors is an integer number (348484300).

Almost surely, 2^1324240321 is an apocalyptic number.

It is an amenable number.

1324240321 is a deficient number, since it is larger than the sum of its proper divisors (69696879).

1324240321 is an equidigital number, since it uses as much as digits as its factorization.

1324240321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69696878.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1324240321 is about 36390.1129566810. The cubic root of 1324240321 is about 1098.1346681163.

Adding to 1324240321 its reverse (1230424231), we get a palindrome (2554664552).

The spelling of 1324240321 in words is "one billion, three hundred twenty-four million, two hundred forty thousand, three hundred twenty-one".