30205123339 has 2 divisors, whose sum is σ = 30205123340. Its totient is φ = 30205123338.

The previous prime is 30205123331. The next prime is 30205123357. The reversal of 30205123339 is 93332150203.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30205123339 - 2³ = 30205123331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30205123339.

It is not a weakly prime, because it can be changed into another prime (30205123331) 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, 15102561669 + 15102561670.

It is an arithmetic number, because the mean of its divisors is an integer number (15102561670).

Almost surely, 2^30205123339 is an apocalyptic number.

30205123339 is a deficient number, since it is larger than the sum of its proper divisors (1).

30205123339 is an equidigital number, since it uses as much as digits as its factorization.

30205123339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 31.

The spelling of 30205123339 in words is "thirty billion, two hundred five million, one hundred twenty-three thousand, three hundred thirty-nine".