12312263 has 2 divisors, whose sum is σ = 12312264. Its totient is φ = 12312262.

The previous prime is 12312241. The next prime is 12312277. The reversal of 12312263 is 36221321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12312263 - 2¹⁸ = 12050119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12312283) 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, 6156131 + 6156132.

It is an arithmetic number, because the mean of its divisors is an integer number (6156132).

Almost surely, 2^12312263 is an apocalyptic number.

12312263 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312263 is an equidigital number, since it uses as much as digits as its factorization.

12312263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 20.

The square root of 12312263 is about 3508.8834406403. The cubic root of 12312263 is about 230.9117120426.

Adding to 12312263 its reverse (36221321), we get a palindrome (48533584).

The spelling of 12312263 in words is "twelve million, three hundred twelve thousand, two hundred sixty-three".