1311241355989 has 8 divisors (see below), whose sum is σ = 1345184549280. Its totient is φ = 1277454944976.

The previous prime is 1311241355987. The next prime is 1311241356013. The reversal of 1311241355989 is 9895531421131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311241355989 - 2¹ = 1311241355987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311241355987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39178627 + ... + 39212080.

It is an arithmetic number, because the mean of its divisors is an integer number (168148068660).

Almost surely, 2^{1311241355989} is an apocalyptic number.

It is an amenable number.

1311241355989 is a deficient number, since it is larger than the sum of its proper divisors (33943193291).

1311241355989 is an equidigital number, since it uses as much as digits as its factorization.

1311241355989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78391139.

The product of its digits is 1166400, while the sum is 52.

The spelling of 1311241355989 in words is "one trillion, three hundred eleven billion, two hundred forty-one million, three hundred fifty-five thousand, nine hundred eighty-nine".