12320515 has 8 divisors (see below), whose sum is σ = 14923440. Its totient is φ = 9763872.

The previous prime is 12320507. The next prime is 12320549. The reversal of 12320515 is 51502321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12320515 - 2³ = 12320507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12320492 and 12320501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10980 + ... + 12049.

It is an arithmetic number, because the mean of its divisors is an integer number (1865430).

Almost surely, 2^12320515 is an apocalyptic number.

12320515 is a deficient number, since it is larger than the sum of its proper divisors (2602925).

12320515 is a wasteful number, since it uses less digits than its factorization.

12320515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23141.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 12320515 is about 3510.0591163113. The cubic root of 12320515 is about 230.9632882071.

Adding to 12320515 its reverse (51502321), we get a palindrome (63822836).

The spelling of 12320515 in words is "twelve million, three hundred twenty thousand, five hundred fifteen".