12381115 has 16 divisors (see below), whose sum is σ = 15537600. Its totient is φ = 9459072.

The previous prime is 12381113. The next prime is 12381167. The reversal of 12381115 is 51118321.

It is a cyclic number.

It is not a de Polignac number, because 12381115 - 2¹ = 12381113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12381113) 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 15 ways as a sum of consecutive naturals, for example, 14521 + ... + 15349.

It is an arithmetic number, because the mean of its divisors is an integer number (971100).

Almost surely, 2^12381115 is an apocalyptic number.

12381115 is a deficient number, since it is larger than the sum of its proper divisors (3156485).

12381115 is a wasteful number, since it uses less digits than its factorization.

12381115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966.

The product of its digits is 240, while the sum is 22.

The square root of 12381115 is about 3518.6808607772. The cubic root of 12381115 is about 231.3413430239.

Adding to 12381115 its reverse (51118321), we get a palindrome (63499436).

The spelling of 12381115 in words is "twelve million, three hundred eighty-one thousand, one hundred fifteen".