831431376 has 60 divisors (see below), whose sum is σ = 2463734052. Its totient is φ = 260840448.

The previous prime is 831431351. The next prime is 831431407. The reversal of 831431376 is 673134138.

It can be written as a sum of positive squares in 2 ways, for example, as 665640000 + 165791376 = 25800^2 + 12876^2 .

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 831431376.

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 11 ways as a sum of consecutive naturals, for example, 167371 + ... + 172266.

Almost surely, 2^831431376 is an apocalyptic number.

It is an amenable number.

831431376 is an abundant number, since it is smaller than the sum of its proper divisors (1632302676).

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

831431376 is a wasteful number, since it uses less digits than its factorization.

831431376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339668 (or 339659 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 831431376 is about 28834.5517738702. The cubic root of 831431376 is about 940.3195593761.

The spelling of 831431376 in words is "eight hundred thirty-one million, four hundred thirty-one thousand, three hundred seventy-six".