12312242 has 16 divisors (see below), whose sum is σ = 18772992. Its totient is φ = 6055680.

The previous prime is 12312241. The next prime is 12312263. The reversal of 12312242 is 24221321.

It is a self number, because there is not a number n which added to its sum of digits gives 12312242.

It is not an unprimeable number, because it can be changed into a prime (12312241) 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, 63698 + ... + 63890.

It is an arithmetic number, because the mean of its divisors is an integer number (1173312).

Almost surely, 2^12312242 is an apocalyptic number.

12312242 is a deficient number, since it is larger than the sum of its proper divisors (6460750).

12312242 is a wasteful number, since it uses less digits than its factorization.

12312242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553.

The product of its digits is 192, while the sum is 17.

The square root of 12312242 is about 3508.8804482342. The cubic root of 12312242 is about 230.9115807603.

Adding to 12312242 its reverse (24221321), we get a palindrome (36533563).

The spelling of 12312242 in words is "twelve million, three hundred twelve thousand, two hundred forty-two".