831913 has 2 divisors, whose sum is σ = 831914. Its totient is φ = 831912.

The previous prime is 831911. The next prime is 831917. The reversal of 831913 is 319138.

831913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 831744 + 169 = 912^2 + 13^2 .

It is a cyclic number.

It is not a de Polignac number, because 831913 - 2¹ = 831911 is a prime.

Together with 831911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (831911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415956 + 415957.

It is an arithmetic number, because the mean of its divisors is an integer number (415957).

2⁸³¹⁹¹³ is an apocalyptic number.

It is an amenable number.

831913 is a deficient number, since it is larger than the sum of its proper divisors (1).

831913 is an equidigital number, since it uses as much as digits as its factorization.

831913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 25.

The square root of 831913 is about 912.0926488027. The cubic root of 831913 is about 94.0501090914.

The spelling of 831913 in words is "eight hundred thirty-one thousand, nine hundred thirteen".