12315247 has 8 divisors (see below), whose sum is σ = 14313600. Its totient is φ = 10376664.

The previous prime is 12315241. The next prime is 12315253. The reversal of 12315247 is 74251321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12315241) and next prime (12315253).

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

It is a cyclic number.

It is not a de Polignac number, because 12315247 - 2¹⁹ = 11790959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12315241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14497 + ... + 15322.

It is an arithmetic number, because the mean of its divisors is an integer number (1789200).

Almost surely, 2^12315247 is an apocalyptic number.

12315247 is a deficient number, since it is larger than the sum of its proper divisors (1998353).

12315247 is an equidigital number, since it uses as much as digits as its factorization.

12315247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29885.

The product of its digits is 1680, while the sum is 25.

The square root of 12315247 is about 3509.3086213669. The cubic root of 12315247 is about 230.9303651229.

Adding to 12315247 its reverse (74251321), we get a palindrome (86566568).

The spelling of 12315247 in words is "twelve million, three hundred fifteen thousand, two hundred forty-seven".