1311343035523 has 32 divisors (see below), whose sum is σ = 1411640032320. Its totient is φ = 1213769195520.

The previous prime is 1311343035521. The next prime is 1311343035529. The reversal of 1311343035523 is 3255303431131.

It is a cyclic number.

It is not a de Polignac number, because 1311343035523 - 2¹ = 1311343035521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311343035521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302359611 + ... + 302363947.

It is an arithmetic number, because the mean of its divisors is an integer number (44113751010).

Almost surely, 2^{1311343035523} is an apocalyptic number.

1311343035523 is a deficient number, since it is larger than the sum of its proper divisors (100296996797).

1311343035523 is a wasteful number, since it uses less digits than its factorization.

1311343035523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5367.

The product of its (nonzero) digits is 48600, while the sum is 34.

Adding to 1311343035523 its reverse (3255303431131), we get a palindrome (4566646466654).

The spelling of 1311343035523 in words is "one trillion, three hundred eleven billion, three hundred forty-three million, thirty-five thousand, five hundred twenty-three".