12331111111 has 8 divisors (see below), whose sum is σ = 13455964800. Its totient is φ = 11206898040.

The previous prime is 12331111063. The next prime is 12331111147. The reversal of 12331111111 is 11111113321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12331111111 is a prime.

It is a Duffinian number.

12331111111 is a modest number, since divided by 111111 gives 12331 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331111151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119451 + ... + 197308.

It is an arithmetic number, because the mean of its divisors is an integer number (1681995600).

Almost surely, 2^12331111111 is an apocalyptic number.

12331111111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12331111111 is a deficient number, since it is larger than the sum of its proper divisors (1124853689).

12331111111 is a wasteful number, since it uses less digits than its factorization.

12331111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320309.

The product of its digits is 18, while the sum is 16.

Adding to 12331111111 its reverse (11111113321), we get a palindrome (23442224432).

The spelling of 12331111111 in words is "twelve billion, three hundred thirty-one million, one hundred eleven thousand, one hundred eleven".