12315330 has 48 divisors (see below), whose sum is σ = 32231160. Its totient is φ = 3262464.

The previous prime is 12315323. The next prime is 12315349. The reversal of 12315330 is 3351321.

It can be written as a sum of positive squares in 4 ways, for example, as 5919489 + 6395841 = 2433^2 + 2529^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17016 + ... + 17724.

Almost surely, 2^12315330 is an apocalyptic number.

12315330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12315330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16115580).

12315330 is an abundant number, since it is smaller than the sum of its proper divisors (19915830).

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

12315330 is a wasteful number, since it uses less digits than its factorization.

12315330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915 (or 912 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 12315330 is about 3509.3204470381. The cubic root of 12315330 is about 230.9308839155.

Adding to 12315330 its reverse (3351321), we get a palindrome (15666651).

It can be divided in two parts, 1231 and 5330, that added together give a 8-th power (6561 = 3⁸).

The spelling of 12315330 in words is "twelve million, three hundred fifteen thousand, three hundred thirty".