12231747 has 12 divisors (see below), whose sum is σ = 19274424. Its totient is φ = 7413120.

The previous prime is 12231733. The next prime is 12231757. The reversal of 12231747 is 74713221.

It is a happy number.

It is not a de Polignac number, because 12231747 - 2⁴ = 12231731 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 12231747.

It is not an unprimeable number, because it can be changed into a prime (12231757) 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 11 ways as a sum of consecutive naturals, for example, 61678 + ... + 61875.

It is an arithmetic number, because the mean of its divisors is an integer number (1606202).

Almost surely, 2^12231747 is an apocalyptic number.

12231747 is a deficient number, since it is larger than the sum of its proper divisors (7042677).

12231747 is a wasteful number, since it uses less digits than its factorization.

12231747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123570 (or 123567 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 12231747 is about 3497.3914565001. The cubic root of 12231747 is about 230.4072620505.

Adding to 12231747 its reverse (74713221), we get a palindrome (86944968).

The spelling of 12231747 in words is "twelve million, two hundred thirty-one thousand, seven hundred forty-seven".