831679321 has 8 divisors (see below), whose sum is σ = 960656544. Its totient is φ = 711597120.

The previous prime is 831679309. The next prime is 831679327. The reversal of 831679321 is 123976138.

831679321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-831679321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (831679327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2223555 + ... + 2223928.

It is an arithmetic number, because the mean of its divisors is an integer number (120082068).

Almost surely, 2^831679321 is an apocalyptic number.

It is an amenable number.

831679321 is a deficient number, since it is larger than the sum of its proper divisors (128977223).

831679321 is a wasteful number, since it uses less digits than its factorization.

831679321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4447511.

The product of its digits is 54432, while the sum is 40.

The square root of 831679321 is about 28838.8508959702. The cubic root of 831679321 is about 940.4130224358.

The spelling of 831679321 in words is "eight hundred thirty-one million, six hundred seventy-nine thousand, three hundred twenty-one".