12312330 has 16 divisors (see below), whose sum is σ = 29549664. Its totient is φ = 3283280.

The previous prime is 12312283. The next prime is 12312331. The reversal of 12312330 is 3321321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12312331) 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, 205176 + ... + 205235.

It is an arithmetic number, because the mean of its divisors is an integer number (1846854).

Almost surely, 2^12312330 is an apocalyptic number.

12312330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12312330 is an abundant number, since it is smaller than the sum of its proper divisors (17237334).

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

12312330 is a wasteful number, since it uses less digits than its factorization.

12312330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410421.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 12312330 is about 3508.8929878239. The cubic root of 12312330 is about 230.9121308948.

Adding to 12312330 its reverse (3321321), we get a palindrome (15633651).

The spelling of 12312330 in words is "twelve million, three hundred twelve thousand, three hundred thirty".