12315530 has 8 divisors (see below), whose sum is σ = 22167972. Its totient is φ = 4926208.

The previous prime is 12315529. The next prime is 12315559. The reversal of 12315530 is 3551321.

It can be written as a sum of positive squares in 2 ways, for example, as 12271009 + 44521 = 3503^2 + 211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615767 + ... + 615786.

Almost surely, 2^12315530 is an apocalyptic number.

12315530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12315530 is a deficient number, since it is larger than the sum of its proper divisors (9852442).

12315530 is a wasteful number, since it uses less digits than its factorization.

12315530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231560.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 12315530 is about 3509.3489424678. The cubic root of 12315530 is about 230.9321340086.

Adding to 12315530 its reverse (3551321), we get a palindrome (15866851).

The spelling of 12315530 in words is "twelve million, three hundred fifteen thousand, five hundred thirty".