131171017 has 2 divisors, whose sum is σ = 131171018. Its totient is φ = 131171016.

The previous prime is 131170981. The next prime is 131171069. The reversal of 131171017 is 710171131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67634176 + 63536841 = 8224^2 + 7971^2 .

It is a cyclic number.

It is not a de Polignac number, because 131171017 - 2¹¹ = 131168969 is a prime.

It is not a weakly prime, because it can be changed into another prime (131171077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65585508 + 65585509.

It is an arithmetic number, because the mean of its divisors is an integer number (65585509).

Almost surely, 2^131171017 is an apocalyptic number.

It is an amenable number.

131171017 is a deficient number, since it is larger than the sum of its proper divisors (1).

131171017 is an equidigital number, since it uses as much as digits as its factorization.

131171017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147, while the sum is 22.

The square root of 131171017 is about 11452.9916179136. The cubic root of 131171017 is about 508.0962175923.

The spelling of 131171017 in words is "one hundred thirty-one million, one hundred seventy-one thousand, seventeen".