171442113317 has 2 divisors, whose sum is σ = 171442113318. Its totient is φ = 171442113316.

The previous prime is 171442113301. The next prime is 171442113449. The reversal of 171442113317 is 713311244171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117603728356 + 53838384961 = 342934^2 + 232031^2 .

It is a cyclic number.

It is not a de Polignac number, because 171442113317 - 2⁴ = 171442113301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171442173317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85721056658 + 85721056659.

It is an arithmetic number, because the mean of its divisors is an integer number (85721056659).

Almost surely, 2^171442113317 is an apocalyptic number.

It is an amenable number.

171442113317 is a deficient number, since it is larger than the sum of its proper divisors (1).

171442113317 is an equidigital number, since it uses as much as digits as its factorization.

171442113317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 35.

Adding to 171442113317 its reverse (713311244171), we get a palindrome (884753357488).

The spelling of 171442113317 in words is "one hundred seventy-one billion, four hundred forty-two million, one hundred thirteen thousand, three hundred seventeen".