8135885317 has 4 divisors (see below), whose sum is σ = 9298154656. Its totient is φ = 6973615980.

The previous prime is 8135885273. The next prime is 8135885323. The reversal of 8135885317 is 7135885318.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7135885318 = 2 ⋅3567942659.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8135885317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8135885327) by changing a digit.

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, 581134659 + ... + 581134672.

It is an arithmetic number, because the mean of its divisors is an integer number (2324538664).

Almost surely, 2^8135885317 is an apocalyptic number.

It is an amenable number.

8135885317 is a deficient number, since it is larger than the sum of its proper divisors (1162269339).

8135885317 is a wasteful number, since it uses less digits than its factorization.

8135885317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162269338.

The product of its digits is 806400, while the sum is 49.

The square root of 8135885317 is about 90199.1425513569. The cubic root of 8135885317 is about 2011.2602607038.

Subtracting from 8135885317 its reverse (7135885318), we obtain a palindrome (999999999).

The spelling of 8135885317 in words is "eight billion, one hundred thirty-five million, eight hundred eighty-five thousand, three hundred seventeen".