171372317 has 2 divisors, whose sum is σ = 171372318. Its totient is φ = 171372316.

The previous prime is 171372283. The next prime is 171372347. The reversal of 171372317 is 713273171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118679236 + 52693081 = 10894^2 + 7259^2 .

It is a cyclic number.

It is not a de Polignac number, because 171372317 - 2²⁴ = 154595101 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 (171372347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85686158 + 85686159.

It is an arithmetic number, because the mean of its divisors is an integer number (85686159).

Almost surely, 2^171372317 is an apocalyptic number.

It is an amenable number.

171372317 is a deficient number, since it is larger than the sum of its proper divisors (1).

171372317 is an equidigital number, since it uses as much as digits as its factorization.

171372317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6174, while the sum is 32.

The square root of 171372317 is about 13090.9249864171. The cubic root of 171372317 is about 555.4524535975.

The spelling of 171372317 in words is "one hundred seventy-one million, three hundred seventy-two thousand, three hundred seventeen".