12031032311 has 16 divisors (see below), whose sum is σ = 12829363200. Its totient is φ = 11243048448.

The previous prime is 12031032217. The next prime is 12031032319. The reversal of 12031032311 is 11323013021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12031032311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12031032311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031032319) 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 15 ways as a sum of consecutive naturals, for example, 1486985 + ... + 1495053.

It is an arithmetic number, because the mean of its divisors is an integer number (801835200).

Almost surely, 2^12031032311 is an apocalyptic number.

12031032311 is a deficient number, since it is larger than the sum of its proper divisors (798330889).

12031032311 is a wasteful number, since it uses less digits than its factorization.

12031032311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8698.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12031032311 its reverse (11323013021), we get a palindrome (23354045332).

The spelling of 12031032311 in words is "twelve billion, thirty-one million, thirty-two thousand, three hundred eleven".