11311320323111 has 2 divisors, whose sum is σ = 11311320323112. Its totient is φ = 11311320323110.

The previous prime is 11311320323059. The next prime is 11311320323141. The reversal of 11311320323111 is 11132302311311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11311320323111 - 2⁶ = 11311320323047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11311320323141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655660161555 + 5655660161556.

It is an arithmetic number, because the mean of its divisors is an integer number (5655660161556).

Almost surely, 2^{11311320323111} is an apocalyptic number.

11311320323111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311320323111 is an equidigital number, since it uses as much as digits as its factorization.

11311320323111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 11311320323111 its reverse (11132302311311), we get a palindrome (22443622634422).

The spelling of 11311320323111 in words is "eleven trillion, three hundred eleven billion, three hundred twenty million, three hundred twenty-three thousand, one hundred eleven".