3204312521 has 2 divisors, whose sum is σ = 3204312522. Its totient is φ = 3204312520.

The previous prime is 3204312491. The next prime is 3204312523. The reversal of 3204312521 is 1252134023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2222179600 + 982132921 = 47140^2 + 31339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3204312521 is a prime.

Together with 3204312523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3204312523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1602156260 + 1602156261.

It is an arithmetic number, because the mean of its divisors is an integer number (1602156261).

Almost surely, 2^3204312521 is an apocalyptic number.

It is an amenable number.

3204312521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3204312521 is an equidigital number, since it uses as much as digits as its factorization.

3204312521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 3204312521 is about 56606.6473216706. The cubic root of 3204312521 is about 1474.2742799378.

Adding to 3204312521 its reverse (1252134023), we get a palindrome (4456446544).

The spelling of 3204312521 in words is "three billion, two hundred four million, three hundred twelve thousand, five hundred twenty-one".