831599421241 has 2 divisors, whose sum is σ = 831599421242. Its totient is φ = 831599421240.

The previous prime is 831599421239. The next prime is 831599421259. The reversal of 831599421241 is 142124995138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 791039475216 + 40559946025 = 889404^2 + 201395^2 .

It is a cyclic number.

It is not a de Polignac number, because 831599421241 - 2¹ = 831599421239 is a prime.

Together with 831599421239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (831599421841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415799710620 + 415799710621.

It is an arithmetic number, because the mean of its divisors is an integer number (415799710621).

Almost surely, 2^831599421241 is an apocalyptic number.

It is an amenable number.

831599421241 is a deficient number, since it is larger than the sum of its proper divisors (1).

831599421241 is an equidigital number, since it uses as much as digits as its factorization.

831599421241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 49.

The spelling of 831599421241 in words is "eight hundred thirty-one billion, five hundred ninety-nine million, four hundred twenty-one thousand, two hundred forty-one".