3123211439 has 2 divisors, whose sum is σ = 3123211440. Its totient is φ = 3123211438.

The previous prime is 3123211397. The next prime is 3123211447. The reversal of 3123211439 is 9341123213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3123211439 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3123211459) 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 as a sum of consecutive naturals, namely, 1561605719 + 1561605720.

It is an arithmetic number, because the mean of its divisors is an integer number (1561605720).

Almost surely, 2^3123211439 is an apocalyptic number.

3123211439 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123211439 is an equidigital number, since it uses as much as digits as its factorization.

3123211439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 3123211439 is about 55885.6997719452. The cubic root of 3123211439 is about 1461.7298940587.

The spelling of 3123211439 in words is "three billion, one hundred twenty-three million, two hundred eleven thousand, four hundred thirty-nine".