831708923 has 4 divisors (see below), whose sum is σ = 834177240. Its totient is φ = 829240608.

The previous prime is 831708859. The next prime is 831708961. The reversal of 831708923 is 329807138.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 831708923 - 2⁶ = 831708859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (831708973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1233653 + ... + 1234326.

It is an arithmetic number, because the mean of its divisors is an integer number (208544310).

Almost surely, 2^831708923 is an apocalyptic number.

831708923 is a deficient number, since it is larger than the sum of its proper divisors (2468317).

831708923 is a wasteful number, since it uses less digits than its factorization.

831708923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468316.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 831708923 is about 28839.3641226709. The cubic root of 831708923 is about 940.4241796912.

The spelling of 831708923 in words is "eight hundred thirty-one million, seven hundred eight thousand, nine hundred twenty-three".