831085056 has 160 divisors (see below), whose sum is σ = 2494483200. Its totient is φ = 273162240.

The previous prime is 831085051. The next prime is 831085111. The reversal of 831085056 is 650580138.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 831085056.

It is not an unprimeable number, because it can be changed into a prime (831085051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1091716 + ... + 1092476.

It is an arithmetic number, because the mean of its divisors is an integer number (15590520).

Almost surely, 2^831085056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 831085056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1247241600).

831085056 is an abundant number, since it is smaller than the sum of its proper divisors (1663398144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

831085056 is an equidigital number, since it uses as much as digits as its factorization.

831085056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 831085056 is about 28828.5458530256. The cubic root of 831085056 is about 940.1889826764.

The spelling of 831085056 in words is "eight hundred thirty-one million, eighty-five thousand, fifty-six".