11231911 has 2 divisors, whose sum is σ = 11231912. Its totient is φ = 11231910.

The previous prime is 11231893. The next prime is 11231923. The reversal of 11231911 is 11913211.

11231911 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11231911 - 2⁵ = 11231879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11231111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615955 + 5615956.

It is an arithmetic number, because the mean of its divisors is an integer number (5615956).

Almost surely, 2^11231911 is an apocalyptic number.

11231911 is a deficient number, since it is larger than the sum of its proper divisors (1).

11231911 is an equidigital number, since it uses as much as digits as its factorization.

11231911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54, while the sum is 19.

The square root of 11231911 is about 3351.4043325150. The cubic root of 11231911 is about 223.9500778948.

It can be divided in two parts, 112 and 31911, that added together give a palindrome (32023).

The spelling of 11231911 in words is "eleven million, two hundred thirty-one thousand, nine hundred eleven".