1331810105939 has 2 divisors, whose sum is σ = 1331810105940. Its totient is φ = 1331810105938.

The previous prime is 1331810105897. The next prime is 1331810105947. The reversal of 1331810105939 is 9395010181331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1331810105939 - 2²⁸ = 1331541670483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1331810105939.

It is not a weakly prime, because it can be changed into another prime (1331810105039) 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, 665905052969 + 665905052970.

It is an arithmetic number, because the mean of its divisors is an integer number (665905052970).

Almost surely, 2^{1331810105939} is an apocalyptic number.

1331810105939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331810105939 is an equidigital number, since it uses as much as digits as its factorization.

1331810105939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 44.

The spelling of 1331810105939 in words is "one trillion, three hundred thirty-one billion, eight hundred ten million, one hundred five thousand, nine hundred thirty-nine".