205223339 has 2 divisors, whose sum is σ = 205223340. Its totient is φ = 205223338.

The previous prime is 205223297. The next prime is 205223341. The reversal of 205223339 is 933322502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205223339 is a prime.

Together with 205223341, 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 (205223639) 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, 102611669 + 102611670.

It is an arithmetic number, because the mean of its divisors is an integer number (102611670).

Almost surely, 2^205223339 is an apocalyptic number.

205223339 is a deficient number, since it is larger than the sum of its proper divisors (1).

205223339 is an equidigital number, since it uses as much as digits as its factorization.

205223339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 205223339 is about 14325.6182763607. The cubic root of 205223339 is about 589.8509045841.

The spelling of 205223339 in words is "two hundred five million, two hundred twenty-three thousand, three hundred thirty-nine".