168431871 has 8 divisors (see below), whose sum is σ = 227418880. Its totient is φ = 110866392.

The previous prime is 168431863. The next prime is 168431891. The reversal of 168431871 is 178134861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 168431871 - 2³ = 168431863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168431821) 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 in 7 ways as a sum of consecutive naturals, for example, 355105 + ... + 355578.

It is an arithmetic number, because the mean of its divisors is an integer number (28427360).

Almost surely, 2^168431871 is an apocalyptic number.

168431871 is a deficient number, since it is larger than the sum of its proper divisors (58987009).

168431871 is an equidigital number, since it uses as much as digits as its factorization.

168431871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710765.

The product of its digits is 32256, while the sum is 39.

The square root of 168431871 is about 12978.1304894041. The cubic root of 168431871 is about 552.2572479026.

The spelling of 168431871 in words is "one hundred sixty-eight million, four hundred thirty-one thousand, eight hundred seventy-one".