168217313 has 8 divisors (see below), whose sum is σ = 189838080. Its totient is φ = 147651280.

The previous prime is 168217297. The next prime is 168217349. The reversal of 168217313 is 313712861.

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

It is a cyclic number.

It is not a de Polignac number, because 168217313 - 2⁴ = 168217297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 168217313.

It is not an unprimeable number, because it can be changed into a prime (168217373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263345 + ... + 263982.

It is an arithmetic number, because the mean of its divisors is an integer number (23729760).

Almost surely, 2^168217313 is an apocalyptic number.

It is an amenable number.

168217313 is a deficient number, since it is larger than the sum of its proper divisors (21620767).

168217313 is a wasteful number, since it uses less digits than its factorization.

168217313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527367.

The product of its digits is 6048, while the sum is 32.

The square root of 168217313 is about 12969.8617186152. The cubic root of 168217313 is about 552.0226494680.

The spelling of 168217313 in words is "one hundred sixty-eight million, two hundred seventeen thousand, three hundred thirteen".