12312646 has 16 divisors (see below), whose sum is σ = 20113200. Its totient is φ = 5630688.

The previous prime is 12312631. The next prime is 12312647. The reversal of 12312646 is 64621321.

12312646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12312646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4485 + ... + 6688.

It is an arithmetic number, because the mean of its divisors is an integer number (1257075).

Almost surely, 2^12312646 is an apocalyptic number.

12312646 is a deficient number, since it is larger than the sum of its proper divisors (7800554).

12312646 is a wasteful number, since it uses less digits than its factorization.

12312646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11223.

The product of its digits is 1728, while the sum is 25.

The square root of 12312646 is about 3508.9380159815. The cubic root of 12312646 is about 230.9141063565.

Adding to 12312646 its reverse (64621321), we get a palindrome (76933967).

It can be divided in two parts, 123 and 12646, that added together give a square (12769 = 113²).

The spelling of 12312646 in words is "twelve million, three hundred twelve thousand, six hundred forty-six".