12031242321013 has 2 divisors, whose sum is σ = 12031242321014. Its totient is φ = 12031242321012.

The previous prime is 12031242321011. The next prime is 12031242321047. The reversal of 12031242321013 is 31012324213021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6367784761809 + 5663457559204 = 2523447^2 + 2379802^2 .

It is a cyclic number.

It is not a de Polignac number, because 12031242321013 - 2¹ = 12031242321011 is a prime.

Together with 12031242321011, 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 (12031242321011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015621160506 + 6015621160507.

It is an arithmetic number, because the mean of its divisors is an integer number (6015621160507).

Almost surely, 2^{12031242321013} is an apocalyptic number.

It is an amenable number.

12031242321013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031242321013 is an equidigital number, since it uses as much as digits as its factorization.

12031242321013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 12031242321013 its reverse (31012324213021), we get a palindrome (43043566534034).

The spelling of 12031242321013 in words is "twelve trillion, thirty-one billion, two hundred forty-two million, three hundred twenty-one thousand, thirteen".