12315327257 has 2 divisors, whose sum is σ = 12315327258. Its totient is φ = 12315327256.

The previous prime is 12315327209. The next prime is 12315327331. The reversal of 12315327257 is 75272351321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9398139136 + 2917188121 = 96944^2 + 54011^2 .

It is a cyclic number.

It is not a de Polignac number, because 12315327257 - 2²⁶ = 12248218393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12315327257.

It is not a weakly prime, because it can be changed into another prime (12315327757) 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, 6157663628 + 6157663629.

It is an arithmetic number, because the mean of its divisors is an integer number (6157663629).

Almost surely, 2^12315327257 is an apocalyptic number.

It is an amenable number.

12315327257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12315327257 is an equidigital number, since it uses as much as digits as its factorization.

12315327257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 38.

Adding to 12315327257 its reverse (75272351321), we get a palindrome (87587678578).

The spelling of 12315327257 in words is "twelve billion, three hundred fifteen million, three hundred twenty-seven thousand, two hundred fifty-seven".