11231313111 has 48 divisors (see below), whose sum is σ = 17288419200. Its totient is φ = 7012583424.

The previous prime is 11231313097. The next prime is 11231313151. The reversal of 11231313111 is 11131313211.

11231313111 is a `hidden beast` number, since 11 + 231 + 313 + 111 = 666.

It is not a de Polignac number, because 11231313111 - 2¹³ = 11231304919 is a prime.

It is a super-2 number, since 2×11231313111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231313151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3542535 + ... + 3545703.

It is an arithmetic number, because the mean of its divisors is an integer number (360175400).

Almost surely, 2^11231313111 is an apocalyptic number.

11231313111 is a deficient number, since it is larger than the sum of its proper divisors (6057106089).

11231313111 is a wasteful number, since it uses less digits than its factorization.

11231313111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608 (or 3605 counting only the distinct ones).

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

Adding to 11231313111 its reverse (11131313211), we get a palindrome (22362626322).

The spelling of 11231313111 in words is "eleven billion, two hundred thirty-one million, three hundred thirteen thousand, one hundred eleven".