831642579013 has 2 divisors, whose sum is σ = 831642579014. Its totient is φ = 831642579012.

The previous prime is 831642578993. The next prime is 831642579017. The reversal of 831642579013 is 310975246138.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 826002869409 + 5639709604 = 908847^2 + 75098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-831642579013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (831642579017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415821289506 + 415821289507.

It is an arithmetic number, because the mean of its divisors is an integer number (415821289507).

It is a 1-persistent number, because it is pandigital, but 2⋅831642579013 = 1663285158026 is not.

Almost surely, 2^831642579013 is an apocalyptic number.

It is an amenable number.

831642579013 is a deficient number, since it is larger than the sum of its proper divisors (1).

831642579013 is an equidigital number, since it uses as much as digits as its factorization.

831642579013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 831642579013 in words is "eight hundred thirty-one billion, six hundred forty-two million, five hundred seventy-nine thousand, thirteen".