12321430 has 48 divisors (see below), whose sum is σ = 25855200. Its totient is φ = 4209920.

The previous prime is 12321409. The next prime is 12321431. The reversal of 12321430 is 3412321.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20271 + ... + 20869.

It is an arithmetic number, because the mean of its divisors is an integer number (538650).

Almost surely, 2^12321430 is an apocalyptic number.

12321430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12321430 is an abundant number, since it is smaller than the sum of its proper divisors (13533770).

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

12321430 is a wasteful number, since it uses less digits than its factorization.

12321430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 12321430 is about 3510.1894535765. The cubic root of 12321430 is about 230.9690056677.

Adding to 12321430 its reverse (3412321), we get a palindrome (15733751).

It can be divided in two parts, 1232 and 1430, that added together give a palindrome (2662).

The spelling of 12321430 in words is "twelve million, three hundred twenty-one thousand, four hundred thirty".