12013212031 has 4 divisors (see below), whose sum is σ = 12024264832. Its totient is φ = 12002159232.

The previous prime is 12013212019. The next prime is 12013212047. The reversal of 12013212031 is 13021231021.

12013212031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12013212031 - 2³³ = 3423277439 is a prime.

It is a super-3 number, since 3×12013212031³ (a number of 31 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 = 12013211996 and 12013212014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013212131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5524770 + ... + 5526943.

It is an arithmetic number, because the mean of its divisors is an integer number (3006066208).

Almost surely, 2^12013212031 is an apocalyptic number.

12013212031 is a deficient number, since it is larger than the sum of its proper divisors (11052801).

12013212031 is a wasteful number, since it uses less digits than its factorization.

12013212031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11052800.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12013212031 its reverse (13021231021), we get a palindrome (25034443052).

The spelling of 12013212031 in words is "twelve billion, thirteen million, two hundred twelve thousand, thirty-one".