12031322311 has 2 divisors, whose sum is σ = 12031322312. Its totient is φ = 12031322310.

The previous prime is 12031322309. The next prime is 12031322321. The reversal of 12031322311 is 11322313021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12031322311 - 2¹ = 12031322309 is a prime.

Together with 12031322309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12031322321) 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, 6015661155 + 6015661156.

It is an arithmetic number, because the mean of its divisors is an integer number (6015661156).

Almost surely, 2^12031322311 is an apocalyptic number.

12031322311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031322311 is an equidigital number, since it uses as much as digits as its factorization.

12031322311 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 12031322311 its reverse (11322313021), we get a palindrome (23353635332).

The spelling of 12031322311 in words is "twelve billion, thirty-one million, three hundred twenty-two thousand, three hundred eleven".