12031011212231 has 16 divisors (see below), whose sum is σ = 13135134105600. Its totient is φ = 10928622448800.

The previous prime is 12031011212191. The next prime is 12031011212237. The reversal of 12031011212231 is 13221211013021.

It is a cyclic number.

It is not a de Polignac number, because 12031011212231 - 2¹⁸ = 12031010950087 is a prime.

It is a super-4 number, since 4×12031011212231⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031011212237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164346185 + ... + 164419373.

It is an arithmetic number, because the mean of its divisors is an integer number (820945881600).

Almost surely, 2^{12031011212231} is an apocalyptic number.

12031011212231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12031011212231 is a deficient number, since it is larger than the sum of its proper divisors (1104122893369).

12031011212231 is a wasteful number, since it uses less digits than its factorization.

12031011212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84830.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12031011212231 its reverse (13221211013021), we get a palindrome (25252222225252).

The spelling of 12031011212231 in words is "twelve trillion, thirty-one billion, eleven million, two hundred twelve thousand, two hundred thirty-one".