12442320313 has 2 divisors, whose sum is σ = 12442320314. Its totient is φ = 12442320312.

The previous prime is 12442320311. The next prime is 12442320323. The reversal of 12442320313 is 31302324421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12430466064 + 11854249 = 111492^2 + 3443^2 .

It is a cyclic number.

It is not a de Polignac number, because 12442320313 - 2¹ = 12442320311 is a prime.

It is a super-2 number, since 2×12442320313² (a number of 21 digits) contains 22 as substring.

Together with 12442320311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12442320311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221160156 + 6221160157.

It is an arithmetic number, because the mean of its divisors is an integer number (6221160157).

Almost surely, 2^12442320313 is an apocalyptic number.

It is an amenable number.

12442320313 is a deficient number, since it is larger than the sum of its proper divisors (1).

12442320313 is an equidigital number, since it uses as much as digits as its factorization.

12442320313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 12442320313 its reverse (31302324421), we get a palindrome (43744644734).

The spelling of 12442320313 in words is "twelve billion, four hundred forty-two million, three hundred twenty thousand, three hundred thirteen".