12031011012331 has 4 divisors (see below), whose sum is σ = 12031042079232. Its totient is φ = 12030979945432.

The previous prime is 12031011012283. The next prime is 12031011012343. The reversal of 12031011012331 is 13321011013021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12031011012331 - 2¹¹ = 12031011010283 is a prime.

It is a super-3 number, since 3×12031011012331³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12031011012299 and 12031011012308.

It is not an unprimeable number, because it can be changed into a prime (12031011012131) 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 3 ways as a sum of consecutive naturals, for example, 14945131 + ... + 15729556.

It is an arithmetic number, because the mean of its divisors is an integer number (3007760519808).

Almost surely, 2^{12031011012331} is an apocalyptic number.

12031011012331 is a deficient number, since it is larger than the sum of its proper divisors (31066901).

12031011012331 is an equidigital number, since it uses as much as digits as its factorization.

12031011012331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31066900.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 12031011012331 its reverse (13321011013021), we get a palindrome (25352022025352).

The spelling of 12031011012331 in words is "twelve trillion, thirty-one billion, eleven million, twelve thousand, three hundred thirty-one".