12311121143423 has 2 divisors, whose sum is σ = 12311121143424. Its totient is φ = 12311121143422.

The previous prime is 12311121143383. The next prime is 12311121143443. The reversal of 12311121143423 is 32434112111321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12311121143423 - 2¹⁰ = 12311121142399 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12311121143443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155560571711 + 6155560571712.

It is an arithmetic number, because the mean of its divisors is an integer number (6155560571712).

Almost surely, 2^{12311121143423} is an apocalyptic number.

12311121143423 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311121143423 is an equidigital number, since it uses as much as digits as its factorization.

12311121143423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

Adding to 12311121143423 its reverse (32434112111321), we get a palindrome (44745233254744).

The spelling of 12311121143423 in words is "twelve trillion, three hundred eleven billion, one hundred twenty-one million, one hundred forty-three thousand, four hundred twenty-three".