11113113231 has 54 divisors (see below), whose sum is σ = 18743715536. Its totient is φ = 6338851200.

The previous prime is 11113113217. The next prime is 11113113233. The reversal of 11113113231 is 13231131111.

11113113231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11113113231 - 2⁷ = 11113113103 is a prime.

It is a super-2 number, since 2×11113113231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11113113233) 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 in 53 ways as a sum of consecutive naturals, for example, 297066 + ... + 332376.

Almost surely, 2^11113113231 is an apocalyptic number.

11113113231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11113113231 is a deficient number, since it is larger than the sum of its proper divisors (7630602305).

11113113231 is a wasteful number, since it uses less digits than its factorization.

11113113231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35373 (or 35342 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

Adding to 11113113231 its reverse (13231131111), we get a palindrome (24344244342).

The spelling of 11113113231 in words is "eleven billion, one hundred thirteen million, one hundred thirteen thousand, two hundred thirty-one".