12231342 has 12 divisors (see below), whose sum is σ = 26501280. Its totient is φ = 4077108.

The previous prime is 12231311. The next prime is 12231367. The reversal of 12231342 is 24313221.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 679519 = 12231342 / (1 + 2 + 2 + 3 + 1 + 3 + 4 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339742 + ... + 339777.

It is an arithmetic number, because the mean of its divisors is an integer number (2208440).

Almost surely, 2^12231342 is an apocalyptic number.

12231342 is an abundant number, since it is smaller than the sum of its proper divisors (14269938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12231342 is a wasteful number, since it uses less digits than its factorization.

12231342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679527 (or 679524 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 12231342 is about 3497.3335557250. Note that the first 3 decimals coincide. The cubic root of 12231342 is about 230.4047190512.

Adding to 12231342 its reverse (24313221), we get a palindrome (36544563).

The spelling of 12231342 in words is "twelve million, two hundred thirty-one thousand, three hundred forty-two".