831923642 has 12 divisors (see below), whose sum is σ = 1371643098. Its totient is φ = 378147000.

The previous prime is 831923629. The next prime is 831923647. The reversal of 831923642 is 246329138.

831923642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 824895841 + 7027801 = 28721^2 + 2651^2 .

It is a super-2 number, since 2×831923642² = 1384193892237088328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 831923596 and 831923605.

It is not an unprimeable number, because it can be changed into a prime (831923647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1718609 + ... + 1719092.

Almost surely, 2^831923642 is an apocalyptic number.

831923642 is a deficient number, since it is larger than the sum of its proper divisors (539719456).

831923642 is a wasteful number, since it uses less digits than its factorization.

831923642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437725 (or 3437714 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 831923642 is about 28843.0865546668. The cubic root of 831923642 is about 940.5051012571.

The spelling of 831923642 in words is "eight hundred thirty-one million, nine hundred twenty-three thousand, six hundred forty-two".