831383138 has 8 divisors (see below), whose sum is σ = 1255018332. Its totient is φ = 413043696.

The previous prime is 831383131. The next prime is 831383167.

It is a happy number.

831383138 is nontrivially palindromic in base 10.

831383138 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 2 ways, for example, as 796537729 + 34845409 = 28223^2 + 5903^2 .

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

It is not an unprimeable number, because it can be changed into a prime (831383131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1323545 + ... + 1324172.

Almost surely, 2^831383138 is an apocalyptic number.

831383138 is a deficient number, since it is larger than the sum of its proper divisors (423635194).

831383138 is a wasteful number, since it uses less digits than its factorization.

831383138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647876.

The product of its digits is 41472, while the sum is 38.

The square root of 831383138 is about 28833.7152999748. The cubic root of 831383138 is about 940.3013738655.

The spelling of 831383138 in words is "eight hundred thirty-one million, three hundred eighty-three thousand, one hundred thirty-eight".