317948791 has 4 divisors (see below), whose sum is σ = 318068784. Its totient is φ = 317828800.

The previous prime is 317948777. The next prime is 317948797. The reversal of 317948791 is 197849713.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 317948791 - 2¹³ = 317940599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317948797) 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, 55930 + ... + 61351.

It is an arithmetic number, because the mean of its divisors is an integer number (79517196).

Almost surely, 2^317948791 is an apocalyptic number.

317948791 is a deficient number, since it is larger than the sum of its proper divisors (119993).

317948791 is a wasteful number, since it uses less digits than its factorization.

317948791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119992.

The product of its digits is 381024, while the sum is 49.

The square root of 317948791 is about 17831.1186132559. The cubic root of 317948791 is about 682.5257789688.

The spelling of 317948791 in words is "three hundred seventeen million, nine hundred forty-eight thousand, seven hundred ninety-one".