317857247609 has 4 divisors (see below), whose sum is σ = 346753361040. Its totient is φ = 288961134180.

The previous prime is 317857247597. The next prime is 317857247623. The reversal of 317857247609 is 906742758713.

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 317857247609 - 2⁸ = 317857247353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317857247639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14448056699 + ... + 14448056720.

It is an arithmetic number, because the mean of its divisors is an integer number (86688340260).

It is a 1-persistent number, because it is pandigital, but 2⋅317857247609 = 635714495218 is not.

Almost surely, 2^317857247609 is an apocalyptic number.

It is an amenable number.

317857247609 is a deficient number, since it is larger than the sum of its proper divisors (28896113431).

317857247609 is a wasteful number, since it uses less digits than its factorization.

317857247609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28896113430.

The product of its (nonzero) digits is 17781120, while the sum is 59.

The spelling of 317857247609 in words is "three hundred seventeen billion, eight hundred fifty-seven million, two hundred forty-seven thousand, six hundred nine".