12316555 has 4 divisors (see below), whose sum is σ = 14779872. Its totient is φ = 9853240.

The previous prime is 12316547. The next prime is 12316589. The reversal of 12316555 is 55561321.

12316555 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12316555 - 2³ = 12316547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1231651 + ... + 1231660.

It is an arithmetic number, because the mean of its divisors is an integer number (3694968).

Almost surely, 2^12316555 is an apocalyptic number.

12316555 is a deficient number, since it is larger than the sum of its proper divisors (2463317).

12316555 is an equidigital number, since it uses as much as digits as its factorization.

12316555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463316.

The product of its digits is 4500, while the sum is 28.

The square root of 12316555 is about 3509.4949779135. The cubic root of 12316555 is about 230.9385405233.

Adding to 12316555 its reverse (55561321), we get a palindrome (67877876).

The spelling of 12316555 in words is "twelve million, three hundred sixteen thousand, five hundred fifty-five".