12319265281 has 2 divisors, whose sum is σ = 12319265282. Its totient is φ = 12319265280.

The previous prime is 12319265227. The next prime is 12319265297. The reversal of 12319265281 is 18256291321.

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., 12051648400 + 267616881 = 109780^2 + 16359^2 .

It is a cyclic number.

It is not a de Polignac number, because 12319265281 - 2²⁵ = 12285710849 is a prime.

It is a super-2 number, since 2×12319265281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12319865281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159632640 + 6159632641.

It is an arithmetic number, because the mean of its divisors is an integer number (6159632641).

Almost surely, 2^12319265281 is an apocalyptic number.

It is an amenable number.

12319265281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12319265281 is an equidigital number, since it uses as much as digits as its factorization.

12319265281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 40.

The spelling of 12319265281 in words is "twelve billion, three hundred nineteen million, two hundred sixty-five thousand, two hundred eighty-one".