12311322444143 has 2 divisors, whose sum is σ = 12311322444144. Its totient is φ = 12311322444142.

The previous prime is 12311322444131. The next prime is 12311322444191. The reversal of 12311322444143 is 34144422311321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12311322444143 - 2²⁴ = 12311305666927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12311322444103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155661222071 + 6155661222072.

It is an arithmetic number, because the mean of its divisors is an integer number (6155661222072).

Almost surely, 2^{12311322444143} is an apocalyptic number.

12311322444143 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311322444143 is an equidigital number, since it uses as much as digits as its factorization.

12311322444143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 35.

Adding to 12311322444143 its reverse (34144422311321), we get a palindrome (46455744755464).

The spelling of 12311322444143 in words is "twelve trillion, three hundred eleven billion, three hundred twenty-two million, four hundred forty-four thousand, one hundred forty-three".