831306013 has 16 divisors (see below), whose sum is σ = 871188480. Its totient is φ = 792316800.

The previous prime is 831305947. The next prime is 831306017. The reversal of 831306013 is 310603138.

It is a happy number.

831306013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-831306013 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 (831306017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1012143 + ... + 1012963.

It is an arithmetic number, because the mean of its divisors is an integer number (54449280).

Almost surely, 2^831306013 is an apocalyptic number.

It is an amenable number.

831306013 is a deficient number, since it is larger than the sum of its proper divisors (39882467).

831306013 is a wasteful number, since it uses less digits than its factorization.

831306013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 831306013 is about 28832.3778589280. The cubic root of 831306013 is about 940.2722966235.

The spelling of 831306013 in words is "eight hundred thirty-one million, three hundred six thousand, thirteen".