12771263 has 4 divisors (see below), whose sum is σ = 13043040. Its totient is φ = 12499488.

The previous prime is 12771221. The next prime is 12771271. The reversal of 12771263 is 36217721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12771263 - 2⁸ = 12771007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12771763) 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 in 3 ways as a sum of consecutive naturals, for example, 135818 + ... + 135911.

It is an arithmetic number, because the mean of its divisors is an integer number (3260760).

Almost surely, 2^12771263 is an apocalyptic number.

12771263 is a deficient number, since it is larger than the sum of its proper divisors (271777).

12771263 is an equidigital number, since it uses as much as digits as its factorization.

12771263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271776.

The product of its digits is 3528, while the sum is 29.

The square root of 12771263 is about 3573.6903894993. The cubic root of 12771263 is about 233.7462306007.

Adding to 12771263 its reverse (36217721), we get a palindrome (48988984).

The spelling of 12771263 in words is "twelve million, seven hundred seventy-one thousand, two hundred sixty-three".