831442313 has 6 divisors (see below), whose sum is σ = 900319374. Its totient is φ = 767485056.

The previous prime is 831442309. The next prime is 831442331. The reversal of 831442313 is 313244138.

It is a happy number.

831442313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 20502784 + 810939529 = 4528^2 + 28477^2 .

It is not a de Polignac number, because 831442313 - 2² = 831442309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (831442303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2459720 + ... + 2460057.

It is an arithmetic number, because the mean of its divisors is an integer number (150053229).

Almost surely, 2^831442313 is an apocalyptic number.

It is an amenable number.

831442313 is a deficient number, since it is larger than the sum of its proper divisors (68877061).

831442313 is a wasteful number, since it uses less digits than its factorization.

831442313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4919803 (or 4919790 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 831442313 is about 28834.7414241918. The cubic root of 831442313 is about 940.3236824784.

The spelling of 831442313 in words is "eight hundred thirty-one million, four hundred forty-two thousand, three hundred thirteen".