12315315 has 16 divisors (see below), whose sum is σ = 19789056. Its totient is φ = 6540000.

The previous prime is 12315301. The next prime is 12315323. The reversal of 12315315 is 51351321.

12315315 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12315315 - 2⁴ = 12315299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12315291 and 12315300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2130 + ... + 5400.

It is an arithmetic number, because the mean of its divisors is an integer number (1236816).

Almost surely, 2^12315315 is an apocalyptic number.

12315315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12315315 is a deficient number, since it is larger than the sum of its proper divisors (7473741).

12315315 is a wasteful number, since it uses less digits than its factorization.

12315315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530.

The product of its digits is 450, while the sum is 21.

The square root of 12315315 is about 3509.3183098716. The cubic root of 12315315 is about 230.9307901580.

Adding to 12315315 its reverse (51351321), we get a palindrome (63666636).

The spelling of 12315315 in words is "twelve million, three hundred fifteen thousand, three hundred fifteen".