171157531500317 has 2 divisors, whose sum is σ = 171157531500318. Its totient is φ = 171157531500316.

The previous prime is 171157531500299. The next prime is 171157531500401. The reversal of 171157531500317 is 713005135751171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89362347423556 + 81795184076761 = 9453166^2 + 9044069^2 .

It is a cyclic number.

It is not a de Polignac number, because 171157531500317 - 2⁶ = 171157531500253 is a prime.

It is a super-2 number, since 2×171157531500317² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171157531500217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85578765750158 + 85578765750159.

It is an arithmetic number, because the mean of its divisors is an integer number (85578765750159).

Almost surely, 2^{171157531500317} is an apocalyptic number.

It is an amenable number.

171157531500317 is a deficient number, since it is larger than the sum of its proper divisors (1).

171157531500317 is an equidigital number, since it uses as much as digits as its factorization.

171157531500317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 385875, while the sum is 47.

The spelling of 171157531500317 in words is "one hundred seventy-one trillion, one hundred fifty-seven billion, five hundred thirty-one million, five hundred thousand, three hundred seventeen".