203430424034317 has 2 divisors, whose sum is σ = 203430424034318. Its totient is φ = 203430424034316.

The previous prime is 203430424034237. The next prime is 203430424034393. The reversal of 203430424034317 is 713430424034302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149896778778756 + 53533645255561 = 12243234^2 + 7316669^2 .

It is a cyclic number.

It is not a de Polignac number, because 203430424034317 - 2³⁹ = 202880668220429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203430424034317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203430424035317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101715212017158 + 101715212017159.

It is an arithmetic number, because the mean of its divisors is an integer number (101715212017159).

Almost surely, 2^{203430424034317} is an apocalyptic number.

It is an amenable number.

203430424034317 is a deficient number, since it is larger than the sum of its proper divisors (1).

203430424034317 is an equidigital number, since it uses as much as digits as its factorization.

203430424034317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 40.

Adding to 203430424034317 its reverse (713430424034302), we get a palindrome (916860848068619).

The spelling of 203430424034317 in words is "two hundred three trillion, four hundred thirty billion, four hundred twenty-four million, thirty-four thousand, three hundred seventeen".