12321234 has 40 divisors (see below), whose sum is σ = 29069040. Its totient is φ = 3889944.

The previous prime is 12321227. The next prime is 12321241. The reversal of 12321234 is 43212321.

12321234 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (12321227) and next prime (12321241).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1077 + ... + 5079.

It is an arithmetic number, because the mean of its divisors is an integer number (726726).

Almost surely, 2^12321234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12321234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14534520).

12321234 is an abundant number, since it is smaller than the sum of its proper divisors (16747806).

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

12321234 is a wasteful number, since it uses less digits than its factorization.

12321234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4036 (or 4027 counting only the distinct ones).

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

The square root of 12321234 is about 3510.1615347445. The cubic root of 12321234 is about 230.9677809677.

Adding to 12321234 its reverse (43212321), we get a palindrome (55533555).

The spelling of 12321234 in words is "twelve million, three hundred twenty-one thousand, two hundred thirty-four".