831140320441 has 2 divisors, whose sum is σ = 831140320442. Its totient is φ = 831140320440.

The previous prime is 831140320427. The next prime is 831140320463. The reversal of 831140320441 is 144023041138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 678119310400 + 153021010041 = 823480^2 + 391179^2 .

It is a cyclic number.

It is not a de Polignac number, because 831140320441 - 2⁹ = 831140319929 is a prime.

It is not a weakly prime, because it can be changed into another prime (831140320541) 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, 415570160220 + 415570160221.

It is an arithmetic number, because the mean of its divisors is an integer number (415570160221).

Almost surely, 2^831140320441 is an apocalyptic number.

It is an amenable number.

831140320441 is a deficient number, since it is larger than the sum of its proper divisors (1).

831140320441 is an equidigital number, since it uses as much as digits as its factorization.

831140320441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 831140320441 its reverse (144023041138), we get a palindrome (975163361579).

The spelling of 831140320441 in words is "eight hundred thirty-one billion, one hundred forty million, three hundred twenty thousand, four hundred forty-one".