12631252349 has 2 divisors, whose sum is σ = 12631252350. Its totient is φ = 12631252348.

The previous prime is 12631252327. The next prime is 12631252367. The reversal of 12631252349 is 94325213621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7257336100 + 5373916249 = 85190^2 + 73307^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12631252349 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12631252379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6315626174 + 6315626175.

It is an arithmetic number, because the mean of its divisors is an integer number (6315626175).

Almost surely, 2^12631252349 is an apocalyptic number.

It is an amenable number.

12631252349 is a deficient number, since it is larger than the sum of its proper divisors (1).

12631252349 is an equidigital number, since it uses as much as digits as its factorization.

12631252349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 38.

The spelling of 12631252349 in words is "twelve billion, six hundred thirty-one million, two hundred fifty-two thousand, three hundred forty-nine".