12000323131031 has 4 divisors (see below), whose sum is σ = 12279400413192. Its totient is φ = 11721245848872.

The previous prime is 12000323131009. The next prime is 12000323131123. The reversal of 12000323131031 is 13013132300021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12000323131031 is a prime.

It is a super-2 number, since 2×12000323131031² (a number of 27 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 = 12000323130994 and 12000323131012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000323131631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139538641016 + ... + 139538641101.

It is an arithmetic number, because the mean of its divisors is an integer number (3069850103298).

Almost surely, 2^{12000323131031} is an apocalyptic number.

12000323131031 is a deficient number, since it is larger than the sum of its proper divisors (279077282161).

12000323131031 is an equidigital number, since it uses as much as digits as its factorization.

12000323131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279077282160.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 12000323131031 its reverse (13013132300021), we get a palindrome (25013455431052).

The spelling of 12000323131031 in words is "twelve trillion, three hundred twenty-three million, one hundred thirty-one thousand, thirty-one".