12631277 has 2 divisors, whose sum is σ = 12631278. Its totient is φ = 12631276.

The previous prime is 12631273. The next prime is 12631279. The reversal of 12631277 is 77213621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12630916 + 361 = 3554^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 12631277 - 2² = 12631273 is a prime.

Together with 12631279, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12631273) 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, 6315638 + 6315639.

It is an arithmetic number, because the mean of its divisors is an integer number (6315639).

Almost surely, 2^12631277 is an apocalyptic number.

It is an amenable number.

12631277 is a deficient number, since it is larger than the sum of its proper divisors (1).

12631277 is an equidigital number, since it uses as much as digits as its factorization.

12631277 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12631277 is about 3554.0507874818. The cubic root of 12631277 is about 232.8890591597.

Adding to 12631277 its reverse (77213621), we get a palindrome (89844898).

The spelling of 12631277 in words is "twelve million, six hundred thirty-one thousand, two hundred seventy-seven".