12631355 has 16 divisors (see below), whose sum is σ = 16740864. Its totient is φ = 9072480.

The previous prime is 12631351. The next prime is 12631361. The reversal of 12631355 is 55313621.

It is not a de Polignac number, because 12631355 - 2² = 12631351 is a prime.

It is a super-2 number, since 2×12631355² = 319102258272050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12631351) 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 15 ways as a sum of consecutive naturals, for example, 3182 + ... + 5948.

It is an arithmetic number, because the mean of its divisors is an integer number (1046304).

Almost surely, 2^12631355 is an apocalyptic number.

12631355 is a deficient number, since it is larger than the sum of its proper divisors (4109509).

12631355 is a wasteful number, since it uses less digits than its factorization.

12631355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866.

The product of its digits is 2700, while the sum is 26.

The square root of 12631355 is about 3554.0617608590. The cubic root of 12631355 is about 232.8895385335.

Adding to 12631355 its reverse (55313621), we get a palindrome (67944976).

The spelling of 12631355 in words is "twelve million, six hundred thirty-one thousand, three hundred fifty-five".