12145315 has 16 divisors (see below), whose sum is σ = 17938368. Its totient is φ = 7687296.

The previous prime is 12145303. The next prime is 12145319. The reversal of 12145315 is 51354121.

It is a happy number.

12145315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12145315 - 2²¹ = 10048163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12145319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12892 + ... + 13801.

It is an arithmetic number, because the mean of its divisors is an integer number (1121148).

Almost surely, 2^12145315 is an apocalyptic number.

12145315 is a deficient number, since it is larger than the sum of its proper divisors (5793053).

12145315 is a wasteful number, since it uses less digits than its factorization.

12145315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26718.

The product of its digits is 600, while the sum is 22.

The square root of 12145315 is about 3485.0129124581. The cubic root of 12145315 is about 229.8632772799.

Adding to 12145315 its reverse (51354121), we get a palindrome (63499436).

The spelling of 12145315 in words is "twelve million, one hundred forty-five thousand, three hundred fifteen".