1311045240143 has 16 divisors (see below), whose sum is σ = 1347827490240. Its totient is φ = 1274334736896.

The previous prime is 1311045240049. The next prime is 1311045240157. The reversal of 1311045240143 is 3410425401131.

It is a cyclic number.

It is not a de Polignac number, because 1311045240143 - 2¹² = 1311045236047 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 (1311045240173) 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 15 ways as a sum of consecutive naturals, for example, 265767905 + ... + 265772837.

It is an arithmetic number, because the mean of its divisors is an integer number (84239218140).

Almost surely, 2^{1311045240143} is an apocalyptic number.

1311045240143 is a deficient number, since it is larger than the sum of its proper divisors (36782250097).

1311045240143 is a wasteful number, since it uses less digits than its factorization.

1311045240143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10706.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 1311045240143 in words is "one trillion, three hundred eleven billion, forty-five million, two hundred forty thousand, one hundred forty-three".