831375113 has 2 divisors, whose sum is σ = 831375114. Its totient is φ = 831375112.

The previous prime is 831375091. The next prime is 831375121. The reversal of 831375113 is 311573138.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 804459769 + 26915344 = 28363^2 + 5188^2 .

It is a cyclic number.

It is not a de Polignac number, because 831375113 - 2²⁶ = 764266249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 831375113.

It is not a weakly prime, because it can be changed into another prime (831275113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415687556 + 415687557.

It is an arithmetic number, because the mean of its divisors is an integer number (415687557).

Almost surely, 2^831375113 is an apocalyptic number.

It is an amenable number.

831375113 is a deficient number, since it is larger than the sum of its proper divisors (1).

831375113 is an equidigital number, since it uses as much as digits as its factorization.

831375113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 831375113 is about 28833.5761396328. The cubic root of 831375113 is about 940.2983484081.

The spelling of 831375113 in words is "eight hundred thirty-one million, three hundred seventy-five thousand, one hundred thirteen".