831839404012 has 6 divisors (see below), whose sum is σ = 1455718957028. Its totient is φ = 415919702004.

The previous prime is 831839403971. The next prime is 831839404013. The reversal of 831839404012 is 210404938138.

It is a super-2 number, since 2×831839404012² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 831839404012.

It is not an unprimeable number, because it can be changed into a prime (831839404013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103979925498 + ... + 103979925505.

Almost surely, 2^831839404012 is an apocalyptic number.

It is an amenable number.

831839404012 is a deficient number, since it is larger than the sum of its proper divisors (623879553016).

831839404012 is a wasteful number, since it uses less digits than its factorization.

831839404012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207959851007 (or 207959851005 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 831839404012 in words is "eight hundred thirty-one billion, eight hundred thirty-nine million, four hundred four thousand, twelve".