111231113223311 has 2 divisors, whose sum is σ = 111231113223312. Its totient is φ = 111231113223310.

The previous prime is 111231113223271. The next prime is 111231113223313. The reversal of 111231113223311 is 113322311132111.

It is a strong prime.

It is an emirp because it is prime and its reverse (113322311132111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111231113223311 is a prime.

It is a Sophie Germain prime.

Together with 111231113223313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111231113223313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55615556611655 + 55615556611656.

It is an arithmetic number, because the mean of its divisors is an integer number (55615556611656).

Almost surely, 2^{111231113223311} is an apocalyptic number.

111231113223311 is a deficient number, since it is larger than the sum of its proper divisors (1).

111231113223311 is an equidigital number, since it uses as much as digits as its factorization.

111231113223311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 26.

Adding to 111231113223311 its reverse (113322311132111), we get a palindrome (224553424355422).

The spelling of 111231113223311 in words is "one hundred eleven trillion, two hundred thirty-one billion, one hundred thirteen million, two hundred twenty-three thousand, three hundred eleven".