12319515 has 24 divisors (see below), whose sum is σ = 22997520. Its totient is φ = 6064704.

The previous prime is 12319511. The next prime is 12319529. The reversal of 12319515 is 51591321.

12319515 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 12319515 - 2² = 12319511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12319511) 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 23 ways as a sum of consecutive naturals, for example, 9945 + ... + 11114.

It is an arithmetic number, because the mean of its divisors is an integer number (958230).

Almost surely, 2^12319515 is an apocalyptic number.

12319515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12319515 is a deficient number, since it is larger than the sum of its proper divisors (10678005).

12319515 is a wasteful number, since it uses less digits than its factorization.

12319515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21083 (or 21080 counting only the distinct ones).

The product of its digits is 1350, while the sum is 27.

The square root of 12319515 is about 3509.9166656774. The cubic root of 12319515 is about 230.9570392925.

The spelling of 12319515 in words is "twelve million, three hundred nineteen thousand, five hundred fifteen".