856316317 has 8 divisors (see below), whose sum is σ = 892052480. Its totient is φ = 821087280.

The previous prime is 856316297. The next prime is 856316341. The reversal of 856316317 is 713613658.

It is a happy number.

856316317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 856316317 - 2⁷ = 856316189 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 856316317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856316717) 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, 123333 + ... + 130090.

It is an arithmetic number, because the mean of its divisors is an integer number (111506560).

Almost surely, 2^856316317 is an apocalyptic number.

It is an amenable number.

856316317 is a deficient number, since it is larger than the sum of its proper divisors (35736163).

856316317 is a wasteful number, since it uses less digits than its factorization.

856316317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253563.

The product of its digits is 90720, while the sum is 40.

The square root of 856316317 is about 29262.8829235945. The cubic root of 856316317 is about 949.6088202949.

The spelling of 856316317 in words is "eight hundred fifty-six million, three hundred sixteen thousand, three hundred seventeen".