12231687 has 32 divisors (see below), whose sum is σ = 19595520. Its totient is φ = 6704640.

The previous prime is 12231679. The next prime is 12231689. The reversal of 12231687 is 78613221.

It is not a de Polignac number, because 12231687 - 2³ = 12231679 is a prime.

It is a super-2 number, since 2×12231687² = 299228333731938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231689) 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 31 ways as a sum of consecutive naturals, for example, 12112 + ... + 13082.

It is an arithmetic number, because the mean of its divisors is an integer number (612360).

Almost surely, 2^12231687 is an apocalyptic number.

12231687 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12231687 is a deficient number, since it is larger than the sum of its proper divisors (7363833).

12231687 is a wasteful number, since it uses less digits than its factorization.

12231687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023.

The product of its digits is 4032, while the sum is 30.

The square root of 12231687 is about 3497.3828786680. The cubic root of 12231687 is about 230.4068853134.

The spelling of 12231687 in words is "twelve million, two hundred thirty-one thousand, six hundred eighty-seven".