12311213203 has 2 divisors, whose sum is σ = 12311213204. Its totient is φ = 12311213202.

The previous prime is 12311213177. The next prime is 12311213231. The reversal of 12311213203 is 30231211321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12311213203 is a prime.

It is not a weakly prime, because it can be changed into another prime (12311211203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155606601 + 6155606602.

It is an arithmetic number, because the mean of its divisors is an integer number (6155606602).

Almost surely, 2^12311213203 is an apocalyptic number.

12311213203 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311213203 is an equidigital number, since it uses as much as digits as its factorization.

12311213203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12311213203 its reverse (30231211321), we get a palindrome (42542424524).

The spelling of 12311213203 in words is "twelve billion, three hundred eleven million, two hundred thirteen thousand, two hundred three".