205103223239 has 2 divisors, whose sum is σ = 205103223240. Its totient is φ = 205103223238.

The previous prime is 205103223191. The next prime is 205103223317. The reversal of 205103223239 is 932322301502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205103223239 - 2⁸ = 205103222983 is a prime.

It is a super-2 number, since 2×205103223239² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205103213239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102551611619 + 102551611620.

It is an arithmetic number, because the mean of its divisors is an integer number (102551611620).

Almost surely, 2^205103223239 is an apocalyptic number.

205103223239 is a deficient number, since it is larger than the sum of its proper divisors (1).

205103223239 is an equidigital number, since it uses as much as digits as its factorization.

205103223239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 32.

The spelling of 205103223239 in words is "two hundred five billion, one hundred three million, two hundred twenty-three thousand, two hundred thirty-nine".