3243213565 has 16 divisors (see below), whose sum is σ = 3930879600. Its totient is φ = 2568609792.

The previous prime is 3243213551. The next prime is 3243213643. The reversal of 3243213565 is 5653123423.

It can be written as a sum of positive squares in 8 ways, for example, as 140612164 + 3102601401 = 11858^2 + 55701^2 .

It is a cyclic number.

It is not a de Polignac number, because 3243213565 - 2⁹ = 3243213053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3243213565.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 567241 + ... + 572929.

It is an arithmetic number, because the mean of its divisors is an integer number (245679975).

Almost surely, 2^3243213565 is an apocalyptic number.

It is an amenable number.

3243213565 is a deficient number, since it is larger than the sum of its proper divisors (687666035).

3243213565 is a wasteful number, since it uses less digits than its factorization.

3243213565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6816.

The product of its digits is 64800, while the sum is 34.

The square root of 3243213565 is about 56949.2191781415. The cubic root of 3243213565 is about 1480.2163010195.

Adding to 3243213565 its reverse (5653123423), we get a palindrome (8896336988).

The spelling of 3243213565 in words is "three billion, two hundred forty-three million, two hundred thirteen thousand, five hundred sixty-five".