12309115 has 24 divisors (see below), whose sum is σ = 18288288. Its totient is φ = 7787520.

The previous prime is 12309113. The next prime is 12309119. The reversal of 12309115 is 51190321.

It is not a de Polignac number, because 12309115 - 2¹ = 12309113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12309113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4875 + ... + 6955.

It is an arithmetic number, because the mean of its divisors is an integer number (762012).

Almost surely, 2^12309115 is an apocalyptic number.

12309115 is a deficient number, since it is larger than the sum of its proper divisors (5979173).

12309115 is a wasteful number, since it uses less digits than its factorization.

12309115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119 (or 2106 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 12309115 is about 3508.4348362197. The cubic root of 12309115 is about 230.8920305259.

Adding to 12309115 its reverse (51190321), we get a palindrome (63499436).

The spelling of 12309115 in words is "twelve million, three hundred nine thousand, one hundred fifteen".