11112113231 has 2 divisors, whose sum is σ = 11112113232. Its totient is φ = 11112113230.

The previous prime is 11112113183. The next prime is 11112113249. The reversal of 11112113231 is 13231121111.

11112113231 is digitally balanced in base 2, 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 a de Polignac number, because none of the positive numbers 2^k-11112113231 is a prime.

It is a super-2 number, since 2×11112113231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112113281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556056615 + 5556056616.

It is an arithmetic number, because the mean of its divisors is an integer number (5556056616).

Almost surely, 2^11112113231 is an apocalyptic number.

11112113231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112113231 is an equidigital number, since it uses as much as digits as its factorization.

11112113231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36, while the sum is 17.

Adding to 11112113231 its reverse (13231121111), we get a palindrome (24343234342).

The spelling of 11112113231 in words is "eleven billion, one hundred twelve million, one hundred thirteen thousand, two hundred thirty-one".