12931227 has 6 divisors (see below), whose sum is σ = 18678452. Its totient is φ = 8620812.

The previous prime is 12931223. The next prime is 12931253. The reversal of 12931227 is 72213921.

It is not a de Polignac number, because 12931227 - 2² = 12931223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12931227.

It is not an unprimeable number, because it can be changed into a prime (12931223) 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 5 ways as a sum of consecutive naturals, for example, 718393 + ... + 718410.

Almost surely, 2^12931227 is an apocalyptic number.

12931227 is a deficient number, since it is larger than the sum of its proper divisors (5747225).

12931227 is a wasteful number, since it uses less digits than its factorization.

12931227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436809 (or 1436806 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 12931227 is about 3596.0015294769. The cubic root of 12931227 is about 234.7180986703.

The spelling of 12931227 in words is "twelve million, nine hundred thirty-one thousand, two hundred twenty-seven".