12631405 has 8 divisors (see below), whose sum is σ = 15305472. Its totient is φ = 10006608.

The previous prime is 12631387. The next prime is 12631417. The reversal of 12631405 is 50413621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12631405 - 2⁵ = 12631373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11749 + ... + 12778.

It is an arithmetic number, because the mean of its divisors is an integer number (1913184).

Almost surely, 2^12631405 is an apocalyptic number.

It is an amenable number.

12631405 is a deficient number, since it is larger than the sum of its proper divisors (2674067).

12631405 is a wasteful number, since it uses less digits than its factorization.

12631405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24635.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 12631405 is about 3554.0687950573. The cubic root of 12631405 is about 232.8898458233.

The spelling of 12631405 in words is "twelve million, six hundred thirty-one thousand, four hundred five".