317478813 has 4 divisors (see below), whose sum is σ = 423305088. Its totient is φ = 211652540.

The previous prime is 317478803. The next prime is 317478839. The reversal of 317478813 is 318874713.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 317478813 - 2⁴ = 317478797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317478803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52913133 + ... + 52913138.

It is an arithmetic number, because the mean of its divisors is an integer number (105826272).

Almost surely, 2^317478813 is an apocalyptic number.

It is an amenable number.

317478813 is a deficient number, since it is larger than the sum of its proper divisors (105826275).

317478813 is a wasteful number, since it uses less digits than its factorization.

317478813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105826274.

The product of its digits is 112896, while the sum is 42.

The square root of 317478813 is about 17817.9351497305. The cubic root of 317478813 is about 682.1893198806.

The spelling of 317478813 in words is "three hundred seventeen million, four hundred seventy-eight thousand, eight hundred thirteen".