205350317 has 2 divisors, whose sum is σ = 205350318. Its totient is φ = 205350316.

The previous prime is 205350307. The next prime is 205350359. The reversal of 205350317 is 713053502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190826596 + 14523721 = 13814^2 + 3811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205350317 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205350307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102675158 + 102675159.

It is an arithmetic number, because the mean of its divisors is an integer number (102675159).

Almost surely, 2^205350317 is an apocalyptic number.

It is an amenable number.

205350317 is a deficient number, since it is larger than the sum of its proper divisors (1).

205350317 is an equidigital number, since it uses as much as digits as its factorization.

205350317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 205350317 is about 14330.0494416453. The cubic root of 205350317 is about 589.9725324759.

The spelling of 205350317 in words is "two hundred five million, three hundred fifty thousand, three hundred seventeen".