831530872 has 16 divisors (see below), whose sum is σ = 1565335800. Its totient is φ = 414108000.

The previous prime is 831530863. The next prime is 831530897. The reversal of 831530872 is 278035138.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205047 + ... + 209062.

Almost surely, 2^831530872 is an apocalyptic number.

It is an amenable number.

831530872 is a deficient number, since it is larger than the sum of its proper divisors (733804928).

831530872 is a wasteful number, since it uses less digits than its factorization.

831530872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414366 (or 414362 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 831530872 is about 28836.2770135120. The cubic root of 831530872 is about 940.3570667021.

The spelling of 831530872 in words is "eight hundred thirty-one million, five hundred thirty thousand, eight hundred seventy-two".