12315402427 has 2 divisors, whose sum is σ = 12315402428. Its totient is φ = 12315402426.

The previous prime is 12315402419. The next prime is 12315402431. The reversal of 12315402427 is 72420451321.

It is a happy number.

12315402427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12315402427 - 2³ = 12315402419 is a prime.

It is not a weakly prime, because it can be changed into another prime (12315402227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6157701213 + 6157701214.

It is an arithmetic number, because the mean of its divisors is an integer number (6157701214).

Almost surely, 2^12315402427 is an apocalyptic number.

12315402427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12315402427 is an equidigital number, since it uses as much as digits as its factorization.

12315402427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

Adding to 12315402427 its reverse (72420451321), we get a palindrome (84735853748).

The spelling of 12315402427 in words is "twelve billion, three hundred fifteen million, four hundred two thousand, four hundred twenty-seven".