12318657 has 16 divisors (see below), whose sum is σ = 17770368. Its totient is φ = 7545600.

The previous prime is 12318623. The next prime is 12318689. The reversal of 12318657 is 75681321.

12318657 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 12318657 - 2⁷ = 12318529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12318857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9657 + ... + 10857.

It is an arithmetic number, because the mean of its divisors is an integer number (1110648).

Almost surely, 2^12318657 is an apocalyptic number.

It is an amenable number.

12318657 is a deficient number, since it is larger than the sum of its proper divisors (5451711).

12318657 is a wasteful number, since it uses less digits than its factorization.

12318657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480.

The product of its digits is 10080, while the sum is 33.

The square root of 12318657 is about 3509.7944384251. The cubic root of 12318657 is about 230.9516774543.

Adding to 12318657 its reverse (75681321), we get a palindrome (87999978).

The spelling of 12318657 in words is "twelve million, three hundred eighteen thousand, six hundred fifty-seven".