12231256 has 16 divisors (see below), whose sum is σ = 23063040. Its totient is φ = 6081120.

The previous prime is 12231253. The next prime is 12231257. The reversal of 12231256 is 65213221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231253) 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 3 ways as a sum of consecutive naturals, for example, 2776 + ... + 5671.

It is an arithmetic number, because the mean of its divisors is an integer number (1441440).

Almost surely, 2^12231256 is an apocalyptic number.

It is an amenable number.

12231256 is a deficient number, since it is larger than the sum of its proper divisors (10831784).

12231256 is a wasteful number, since it uses less digits than its factorization.

12231256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8634 (or 8630 counting only the distinct ones).

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

The square root of 12231256 is about 3497.3212606222. The cubic root of 12231256 is about 230.4041790491.

Adding to 12231256 its reverse (65213221), we get a palindrome (77444477).

The spelling of 12231256 in words is "twelve million, two hundred thirty-one thousand, two hundred fifty-six".