204213031334317 has 2 divisors, whose sum is σ = 204213031334318. Its totient is φ = 204213031334316.

The previous prime is 204213031334287. The next prime is 204213031334321. The reversal of 204213031334317 is 713433130312402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199434583981161 + 4778447353156 = 14122131^2 + 2185966^2 .

It is a cyclic number.

It is not a de Polignac number, because 204213031334317 - 2¹⁵ = 204213031301549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204213031344317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102106515667158 + 102106515667159.

It is an arithmetic number, because the mean of its divisors is an integer number (102106515667159).

Almost surely, 2^{204213031334317} is an apocalyptic number.

It is an amenable number.

204213031334317 is a deficient number, since it is larger than the sum of its proper divisors (1).

204213031334317 is an equidigital number, since it uses as much as digits as its factorization.

204213031334317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 37.

Adding to 204213031334317 its reverse (713433130312402), we get a palindrome (917646161646719).

The spelling of 204213031334317 in words is "two hundred four trillion, two hundred thirteen billion, thirty-one million, three hundred thirty-four thousand, three hundred seventeen".