12131322143 has 4 divisors (see below), whose sum is σ = 12132296568. Its totient is φ = 12130347720.

The previous prime is 12131322121. The next prime is 12131322167. The reversal of 12131322143 is 34122313121.

12131322143 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 12131322143 - 2⁸ = 12131321887 is a prime.

It is a super-2 number, since 2×12131322143² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131322173) 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, 468293 + ... + 493518.

It is an arithmetic number, because the mean of its divisors is an integer number (3033074142).

Almost surely, 2^12131322143 is an apocalyptic number.

12131322143 is a deficient number, since it is larger than the sum of its proper divisors (974425).

12131322143 is an equidigital number, since it uses as much as digits as its factorization.

12131322143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974424.

The product of its digits is 864, while the sum is 23.

Adding to 12131322143 its reverse (34122313121), we get a palindrome (46253635264).

The spelling of 12131322143 in words is "twelve billion, one hundred thirty-one million, three hundred twenty-two thousand, one hundred forty-three".