1311023411143 has 2 divisors, whose sum is σ = 1311023411144. Its totient is φ = 1311023411142.

The previous prime is 1311023411129. The next prime is 1311023411167. The reversal of 1311023411143 is 3411143201131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311023411143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311023411543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655511705571 + 655511705572.

It is an arithmetic number, because the mean of its divisors is an integer number (655511705572).

Almost surely, 2^{1311023411143} is an apocalyptic number.

1311023411143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311023411143 is an equidigital number, since it uses as much as digits as its factorization.

1311023411143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 1311023411143 its reverse (3411143201131), we get a palindrome (4722166612274).

The spelling of 1311023411143 in words is "one trillion, three hundred eleven billion, twenty-three million, four hundred eleven thousand, one hundred forty-three".