831923 has 4 divisors (see below), whose sum is σ = 860640. Its totient is φ = 803208.

The previous prime is 831917. The next prime is 831967. The reversal of 831923 is 329138.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 329138 = 2 ⋅164569.

It is a cyclic number.

It is not a de Polignac number, because 831923 - 2¹⁰ = 830899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 831892 and 831901.

It is not an unprimeable number, because it can be changed into a prime (831913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14315 + ... + 14372.

It is an arithmetic number, because the mean of its divisors is an integer number (215160).

2⁸³¹⁹²³ is an apocalyptic number.

831923 is a deficient number, since it is larger than the sum of its proper divisors (28717).

831923 is a wasteful number, since it uses less digits than its factorization.

831923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28716.

The product of its digits is 1296, while the sum is 26.

The square root of 831923 is about 912.0981306855. The cubic root of 831923 is about 94.0504859326.

The spelling of 831923 in words is "eight hundred thirty-one thousand, nine hundred twenty-three".