1311446320487 has 2 divisors, whose sum is σ = 1311446320488. Its totient is φ = 1311446320486.

The previous prime is 1311446320433. The next prime is 1311446320517. The reversal of 1311446320487 is 7840236441131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1311446320487 - 2²⁴ = 1311429543271 is a prime.

It is a super-2 number, since 2×1311446320487² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311446320787) 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, 655723160243 + 655723160244.

It is an arithmetic number, because the mean of its divisors is an integer number (655723160244).

Almost surely, 2^{1311446320487} is an apocalyptic number.

1311446320487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311446320487 is an equidigital number, since it uses as much as digits as its factorization.

1311446320487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 1311446320487 in words is "one trillion, three hundred eleven billion, four hundred forty-six million, three hundred twenty thousand, four hundred eighty-seven".