317607991 has 8 divisors (see below), whose sum is σ = 336448944. Its totient is φ = 298784640.

The previous prime is 317607967. The next prime is 317608007. The reversal of 317607991 is 199706713.

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 317607991 - 2¹⁷ = 317476919 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 (317607491) 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, 58836 + ... + 64006.

It is an arithmetic number, because the mean of its divisors is an integer number (42056118).

Almost surely, 2^317607991 is an apocalyptic number.

317607991 is a deficient number, since it is larger than the sum of its proper divisors (18840953).

317607991 is a wasteful number, since it uses less digits than its factorization.

317607991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8801.

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

The square root of 317607991 is about 17821.5597241094. The cubic root of 317607991 is about 682.2818319884.

The spelling of 317607991 in words is "three hundred seventeen million, six hundred seven thousand, nine hundred ninety-one".