831613 has 4 divisors (see below), whose sum is σ = 845308. Its totient is φ = 817920.

The previous prime is 831599. The next prime is 831617. The reversal of 831613 is 316138.

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

It can be written as a sum of positive squares in 2 ways, for example, as 257049 + 574564 = 507^2 + 758^2 .

It is a cyclic number.

It is not a de Polignac number, because 831613 - 2¹³ = 823421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831617) 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, 6756 + ... + 6877.

It is an arithmetic number, because the mean of its divisors is an integer number (211327).

2⁸³¹⁶¹³ is an apocalyptic number.

It is an amenable number.

831613 is a deficient number, since it is larger than the sum of its proper divisors (13695).

831613 is a wasteful number, since it uses less digits than its factorization.

831613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13694.

The product of its digits is 432, while the sum is 22.

The square root of 831613 is about 911.9281769964. The cubic root of 831613 is about 94.0388024503.

It can be divided in two parts, 831 and 613, that added together give a square (1444 = 38²).

The spelling of 831613 in words is "eight hundred thirty-one thousand, six hundred thirteen".