317971906 has 8 divisors (see below), whose sum is σ = 545094720. Its totient is φ = 136273668.

The previous prime is 317971891. The next prime is 317971949. The reversal of 317971906 is 609179713.

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

It is a super-2 number, since 2×317971906² = 202212266010545672, which contains 22 as substring.

It is an unprimeable number.

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, 11356126 + ... + 11356153.

It is an arithmetic number, because the mean of its divisors is an integer number (68136840).

Almost surely, 2^317971906 is an apocalyptic number.

317971906 is a deficient number, since it is larger than the sum of its proper divisors (227122814).

317971906 is a wasteful number, since it uses less digits than its factorization.

317971906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22712288.

The product of its (nonzero) digits is 71442, while the sum is 43.

The square root of 317971906 is about 17831.7667660835. The cubic root of 317971906 is about 682.5423185306.

The spelling of 317971906 in words is "three hundred seventeen million, nine hundred seventy-one thousand, nine hundred six".