831142672 has 10 divisors (see below), whose sum is σ = 1610338958. Its totient is φ = 415571328.

The previous prime is 831142667. The next prime is 831142673. The reversal of 831142672 is 276241138.

It can be written as a sum of positive squares in only one way, i.e., 493906176 + 337236496 = 22224^2 + 18364^2 .

It is not an unprimeable number, because it can be changed into a prime (831142673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25973193 + ... + 25973224.

Almost surely, 2^831142672 is an apocalyptic number.

It is an amenable number.

831142672 is a deficient number, since it is larger than the sum of its proper divisors (779196286).

831142672 is a wasteful number, since it uses less digits than its factorization.

831142672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51946425 (or 51946419 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 831142672 is about 28829.5451230157. The cubic root of 831142672 is about 940.2107087626.

The spelling of 831142672 in words is "eight hundred thirty-one million, one hundred forty-two thousand, six hundred seventy-two".