12631893 has 4 divisors (see below), whose sum is σ = 16842528. Its totient is φ = 8421260.

The previous prime is 12631891. The next prime is 12631897. The reversal of 12631893 is 39813621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12631893 - 2¹ = 12631891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12631891) 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 in 3 ways as a sum of consecutive naturals, for example, 2105313 + ... + 2105318.

It is an arithmetic number, because the mean of its divisors is an integer number (4210632).

Almost surely, 2^12631893 is an apocalyptic number.

It is an amenable number.

12631893 is a deficient number, since it is larger than the sum of its proper divisors (4210635).

12631893 is an equidigital number, since it uses as much as digits as its factorization.

12631893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210634.

The product of its digits is 7776, while the sum is 33.

The square root of 12631893 is about 3554.1374481019. The cubic root of 12631893 is about 232.8928449297.

The spelling of 12631893 in words is "twelve million, six hundred thirty-one thousand, eight hundred ninety-three".