1311323133211 has 16 divisors (see below), whose sum is σ = 1615200156864. Its totient is φ = 1036717824384.

The previous prime is 1311323133199. The next prime is 1311323133227. The reversal of 1311323133211 is 1123313231131.

It is a cyclic number.

It is not a de Polignac number, because 1311323133211 - 2⁹ = 1311323132699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311323133271) 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 in 15 ways as a sum of consecutive naturals, for example, 5525980 + ... + 5758393.

It is an arithmetic number, because the mean of its divisors is an integer number (100950009804).

Almost surely, 2^{1311323133211} is an apocalyptic number.

1311323133211 is a deficient number, since it is larger than the sum of its proper divisors (303877023653).

1311323133211 is a wasteful number, since it uses less digits than its factorization.

1311323133211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11285670.

The product of its digits is 972, while the sum is 25.

Adding to 1311323133211 its reverse (1123313231131), we get a palindrome (2434636364342).

The spelling of 1311323133211 in words is "one trillion, three hundred eleven billion, three hundred twenty-three million, one hundred thirty-three thousand, two hundred eleven".