12003321031 has 4 divisors (see below), whose sum is σ = 12926653432. Its totient is φ = 11079988632.

The previous prime is 12003321013. The next prime is 12003321037. The reversal of 12003321031 is 13012330021.

12003321031 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, and also an emirpimes, since its reverse is a distinct semiprime: 13012330021 = 151 ⋅86174371.

It is a cyclic number.

It is not a de Polignac number, because 12003321031 - 2¹⁷ = 12003189959 is a prime.

It is a super-2 number, since 2×12003321031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12003320996 and 12003321014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003321037) 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, 461666181 + ... + 461666206.

It is an arithmetic number, because the mean of its divisors is an integer number (3231663358).

Almost surely, 2^12003321031 is an apocalyptic number.

12003321031 is a deficient number, since it is larger than the sum of its proper divisors (923332401).

12003321031 is an equidigital number, since it uses as much as digits as its factorization.

12003321031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923332400.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 12003321031 its reverse (13012330021), we get a palindrome (25015651052).

The spelling of 12003321031 in words is "twelve billion, three million, three hundred twenty-one thousand, thirty-one".