831323138 has 8 divisors (see below), whose sum is σ = 1255956240. Its totient is φ = 412671060.

The previous prime is 831323111. The next prime is 831323149.

831323138 is nontrivially palindromic in base 10.

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

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 1494908 + ... + 1495463.

It is an arithmetic number, because the mean of its divisors is an integer number (156994530).

Almost surely, 2^831323138 is an apocalyptic number.

831323138 is a deficient number, since it is larger than the sum of its proper divisors (424633102).

831323138 is a wasteful number, since it uses less digits than its factorization.

831323138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990512.

The product of its digits is 10368, while the sum is 32.

The square root of 831323138 is about 28832.6748325576. The cubic root of 831323138 is about 940.2787531519.

The spelling of 831323138 in words is "eight hundred thirty-one million, three hundred twenty-three thousand, one hundred thirty-eight".