317048857 has 4 divisors (see below), whose sum is σ = 318445776. Its totient is φ = 315651940.

The previous prime is 317048833. The next prime is 317048869. The reversal of 317048857 is 758840713.

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 a de Polignac number, because none of the positive numbers 2^k-317048857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317048257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698119 + ... + 698572.

It is an arithmetic number, because the mean of its divisors is an integer number (79611444).

Almost surely, 2^317048857 is an apocalyptic number.

It is an amenable number.

317048857 is a deficient number, since it is larger than the sum of its proper divisors (1396919).

317048857 is a wasteful number, since it uses less digits than its factorization.

317048857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396918.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 317048857 is about 17805.8658031560. The cubic root of 317048857 is about 681.8812217360.

The spelling of 317048857 in words is "three hundred seventeen million, forty-eight thousand, eight hundred fifty-seven".