12631055 has 4 divisors (see below), whose sum is σ = 15157272. Its totient is φ = 10104840.

The previous prime is 12631019. The next prime is 12631057. The reversal of 12631055 is 55013621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55013621 = 13 ⋅4231817.

It is not a de Polignac number, because 12631055 - 2⁸ = 12630799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12631055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12631057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263101 + ... + 1263110.

It is an arithmetic number, because the mean of its divisors is an integer number (3789318).

Almost surely, 2^12631055 is an apocalyptic number.

12631055 is a deficient number, since it is larger than the sum of its proper divisors (2526217).

12631055 is an equidigital number, since it uses as much as digits as its factorization.

12631055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526216.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 12631055 is about 3554.0195553767. The cubic root of 12631055 is about 232.8876947774.

Adding to 12631055 its reverse (55013621), we get a palindrome (67644676).

The spelling of 12631055 in words is "twelve million, six hundred thirty-one thousand, fifty-five".