12231009 has 36 divisors (see below), whose sum is σ = 21164416. Its totient is φ = 6667056.

The previous prime is 12231001. The next prime is 12231059. The reversal of 12231009 is 90013221.

It is a happy number.

It is not a de Polignac number, because 12231009 - 2³ = 12231001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12230982 and 12231000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231001) 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 35 ways as a sum of consecutive naturals, for example, 33144 + ... + 33510.

Almost surely, 2^12231009 is an apocalyptic number.

It is an amenable number.

12231009 is a deficient number, since it is larger than the sum of its proper divisors (8933407).

12231009 is a wasteful number, since it uses less digits than its factorization.

12231009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 12231009 is about 3497.2859477029. The cubic root of 12231009 is about 230.4026280986.

The spelling of 12231009 in words is "twelve million, two hundred thirty-one thousand, nine".