1311311089775 has 24 divisors (see below), whose sum is σ = 1656853887600. Its totient is φ = 1029163299840.

The previous prime is 1311311089729. The next prime is 1311311089799. The reversal of 1311311089775 is 5779801131131.

It is a happy number.

It is not a de Polignac number, because 1311311089775 - 2¹⁰ = 1311311088751 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 17318399 + ... + 17393951.

It is an arithmetic number, because the mean of its divisors is an integer number (69035578650).

Almost surely, 2^{1311311089775} is an apocalyptic number.

1311311089775 is a deficient number, since it is larger than the sum of its proper divisors (345542797825).

1311311089775 is a wasteful number, since it uses less digits than its factorization.

1311311089775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88715 (or 88710 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 47.

The spelling of 1311311089775 in words is "one trillion, three hundred eleven billion, three hundred eleven million, eighty-nine thousand, seven hundred seventy-five".