12885631 has 4 divisors (see below), whose sum is σ = 14057064. Its totient is φ = 11714200.

The previous prime is 12885623. The next prime is 12885671. The reversal of 12885631 is 13658821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12885631 - 2³ = 12885623 is a prime.

It is a super-2 number, since 2×12885631² = 332078972536322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12885671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585700 + ... + 585721.

It is an arithmetic number, because the mean of its divisors is an integer number (3514266).

Almost surely, 2^12885631 is an apocalyptic number.

12885631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12885631 is a deficient number, since it is larger than the sum of its proper divisors (1171433).

12885631 is a wasteful number, since it uses less digits than its factorization.

12885631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171432.

The product of its digits is 11520, while the sum is 34.

The square root of 12885631 is about 3589.6561116631. The cubic root of 12885631 is about 234.4418987933.

The spelling of 12885631 in words is "twelve million, eight hundred eighty-five thousand, six hundred thirty-one".