831481308 has 48 divisors (see below), whose sum is σ = 2463650560. Its totient is φ = 237565872.

The previous prime is 831481291. The next prime is 831481309. The reversal of 831481308 is 803184138.

It is a super-2 number, since 2×831481308² = 1382722331106781728, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831481309) 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 15 ways as a sum of consecutive naturals, for example, 549166 + ... + 550677.

Almost surely, 2^831481308 is an apocalyptic number.

It is an amenable number.

831481308 is an abundant number, since it is smaller than the sum of its proper divisors (1632169252).

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

831481308 is a wasteful number, since it uses less digits than its factorization.

831481308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099863 (or 1099855 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 831481308 is about 28835.4175971148. The cubic root of 831481308 is about 940.3383827762.

The spelling of 831481308 in words is "eight hundred thirty-one million, four hundred eighty-one thousand, three hundred eight".