813285582317 has 8 divisors (see below), whose sum is σ = 875869844640. Its totient is φ = 750704724720.

The previous prime is 813285582301. The next prime is 813285582337. The reversal of 813285582317 is 713285582318.

It is a happy number.

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 813285582317 - 2⁴ = 813285582301 is a prime.

It is a super-2 number, since 2×813285582317² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813285582337) 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, 343859 + ... + 1320912.

It is an arithmetic number, because the mean of its divisors is an integer number (109483730580).

Almost surely, 2^813285582317 is an apocalyptic number.

It is an amenable number.

813285582317 is a deficient number, since it is larger than the sum of its proper divisors (62584262323).

813285582317 is a wasteful number, since it uses less digits than its factorization.

813285582317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702363.

The product of its digits is 3225600, while the sum is 53.

Subtracting from 813285582317 its reverse (713285582318), we obtain a palindrome (99999999999).

The spelling of 813285582317 in words is "eight hundred thirteen billion, two hundred eighty-five million, five hundred eighty-two thousand, three hundred seventeen".