3243323021 has 4 divisors (see below), whose sum is σ = 3268081344. Its totient is φ = 3218564700.

The previous prime is 3243323003. The next prime is 3243323063. The reversal of 3243323021 is 1203233423.

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: 1203233423 = 7 ⋅171890489.

It is a cyclic number.

It is not a de Polignac number, because 3243323021 - 2¹⁴ = 3243306637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3243323071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12378965 + ... + 12379226.

It is an arithmetic number, because the mean of its divisors is an integer number (817020336).

Almost surely, 2^3243323021 is an apocalyptic number.

It is an amenable number.

3243323021 is a deficient number, since it is larger than the sum of its proper divisors (24758323).

3243323021 is a wasteful number, since it uses less digits than its factorization.

3243323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24758322.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 3243323021 is about 56950.1801665280. The cubic root of 3243323021 is about 1480.2329528917.

Adding to 3243323021 its reverse (1203233423), we get a palindrome (4446556444).

The spelling of 3243323021 in words is "three billion, two hundred forty-three million, three hundred twenty-three thousand, twenty-one".