11313231111 has 96 divisors (see below), whose sum is σ = 21872043648. Its totient is φ = 5464350720.

The previous prime is 11313231101. The next prime is 11313231113. The reversal of 11313231111 is 11113231311.

11313231111 is a `hidden beast` number, since 11 + 313 + 231 + 111 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-11313231111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11313231113) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 504171 + ... + 526131.

It is an arithmetic number, because the mean of its divisors is an integer number (227833788).

Almost surely, 2^11313231111 is an apocalyptic number.

11313231111 is a deficient number, since it is larger than the sum of its proper divisors (10558812537).

11313231111 is a wasteful number, since it uses less digits than its factorization.

11313231111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22041 (or 22038 counting only the distinct ones).

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

Adding to 11313231111 its reverse (11113231311), we get a palindrome (22426462422).

The spelling of 11313231111 in words is "eleven billion, three hundred thirteen million, two hundred thirty-one thousand, one hundred eleven".