1311143244403 has 2 divisors, whose sum is σ = 1311143244404. Its totient is φ = 1311143244402.

The previous prime is 1311143244343. The next prime is 1311143244413. The reversal of 1311143244403 is 3044423411131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1311143244403 - 2¹⁷ = 1311143113331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311143244413) 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, 655571622201 + 655571622202.

It is an arithmetic number, because the mean of its divisors is an integer number (655571622202).

Almost surely, 2^{1311143244403} is an apocalyptic number.

1311143244403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311143244403 is an equidigital number, since it uses as much as digits as its factorization.

1311143244403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 1311143244403 its reverse (3044423411131), we get a palindrome (4355566655534).

The spelling of 1311143244403 in words is "one trillion, three hundred eleven billion, one hundred forty-three million, two hundred forty-four thousand, four hundred three".