171291712 has 14 divisors (see below), whose sum is σ = 339907118. Its totient is φ = 85645824.

The previous prime is 171291667. The next prime is 171291713. The reversal of 171291712 is 217192171.

It can be written as a sum of positive squares in only one way, i.e., 116294656 + 54997056 = 10784^2 + 7416^2 .

It is not an unprimeable number, because it can be changed into a prime (171291713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1338153 + ... + 1338280.

Almost surely, 2^171291712 is an apocalyptic number.

It is an amenable number.

171291712 is a deficient number, since it is larger than the sum of its proper divisors (168615406).

171291712 is an equidigital number, since it uses as much as digits as its factorization.

171291712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676445 (or 2676435 counting only the distinct ones).

The product of its digits is 1764, while the sum is 31.

The square root of 171291712 is about 13087.8459648637. The cubic root of 171291712 is about 555.3653542200.

The spelling of 171291712 in words is "one hundred seventy-one million, two hundred ninety-one thousand, seven hundred twelve".