317157442885 has 4 divisors (see below), whose sum is σ = 380588931468. Its totient is φ = 253725954304.

The previous prime is 317157442879. The next prime is 317157442919. The reversal of 317157442885 is 588244751713.

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

It can be written as a sum of positive squares in 2 ways, for example, as 156576115809 + 160581327076 = 395697^2 + 400726^2 .

It is a cyclic number.

It is not a de Polignac number, because 317157442885 - 2¹¹ = 317157440837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31715744284 + ... + 31715744293.

It is an arithmetic number, because the mean of its divisors is an integer number (95147232867).

Almost surely, 2^317157442885 is an apocalyptic number.

It is an amenable number.

317157442885 is a deficient number, since it is larger than the sum of its proper divisors (63431488583).

317157442885 is an equidigital number, since it uses as much as digits as its factorization.

317157442885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63431488582.

The product of its digits is 7526400, while the sum is 55.

The spelling of 317157442885 in words is "three hundred seventeen billion, one hundred fifty-seven million, four hundred forty-two thousand, eight hundred eighty-five".