12311311231229 has 2 divisors, whose sum is σ = 12311311231230. Its totient is φ = 12311311231228.

The previous prime is 12311311231201. The next prime is 12311311231237. The reversal of 12311311231229 is 92213211311321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7015320336025 + 5295990895204 = 2648645^2 + 2301302^2 .

It is an emirp because it is prime and its reverse (92213211311321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12311311231229 - 2²⁴ = 12311294454013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12311311231195 and 12311311231204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12311311231129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155655615614 + 6155655615615.

It is an arithmetic number, because the mean of its divisors is an integer number (6155655615615).

Almost surely, 2^{12311311231229} is an apocalyptic number.

It is an amenable number.

12311311231229 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311311231229 is an equidigital number, since it uses as much as digits as its factorization.

12311311231229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The spelling of 12311311231229 in words is "twelve trillion, three hundred eleven billion, three hundred eleven million, two hundred thirty-one thousand, two hundred twenty-nine".