168397271 has 24 divisors (see below), whose sum is σ = 203049504. Its totient is φ = 139164480.

The previous prime is 168397259. The next prime is 168397279. The reversal of 168397271 is 172793861.

It is not a de Polignac number, because 168397271 - 2¹⁴ = 168380887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168397279) 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 23 ways as a sum of consecutive naturals, for example, 157886 + ... + 158948.

It is an arithmetic number, because the mean of its divisors is an integer number (8460396).

Almost surely, 2^168397271 is an apocalyptic number.

168397271 is a deficient number, since it is larger than the sum of its proper divisors (34652233).

168397271 is a wasteful number, since it uses less digits than its factorization.

168397271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191 (or 1184 counting only the distinct ones).

The product of its digits is 127008, while the sum is 44.

The square root of 168397271 is about 12976.7974092224. The cubic root of 168397271 is about 552.2194296258.

The spelling of 168397271 in words is "one hundred sixty-eight million, three hundred ninety-seven thousand, two hundred seventy-one".