3204312491 has 2 divisors, whose sum is σ = 3204312492. Its totient is φ = 3204312490.

The previous prime is 3204312487. The next prime is 3204312521. The reversal of 3204312491 is 1942134023.

It is a weak prime.

It is an emirp because it is prime and its reverse (1942134023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3204312491 - 2² = 3204312487 is a prime.

It is not a weakly prime, because it can be changed into another prime (3204312421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1602156245 + 1602156246.

It is an arithmetic number, because the mean of its divisors is an integer number (1602156246).

Almost surely, 2^3204312491 is an apocalyptic number.

3204312491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3204312491 is an equidigital number, since it uses as much as digits as its factorization.

3204312491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 3204312491 is about 56606.6470566841. The cubic root of 3204312491 is about 1474.2742753369.

The spelling of 3204312491 in words is "three billion, two hundred four million, three hundred twelve thousand, four hundred ninety-one".