12318508 has 6 divisors (see below), whose sum is σ = 21557396. Its totient is φ = 6159252.

The previous prime is 12318503. The next prime is 12318529. The reversal of 12318508 is 80581321.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12318503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1539810 + ... + 1539817.

Almost surely, 2^12318508 is an apocalyptic number.

It is an amenable number.

12318508 is a deficient number, since it is larger than the sum of its proper divisors (9238888).

12318508 is a wasteful number, since it uses less digits than its factorization.

12318508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079631 (or 3079629 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 12318508 is about 3509.7732120466. The cubic root of 12318508 is about 230.9507462938.

Adding to 12318508 its reverse (80581321), we get a palindrome (92899829).

The spelling of 12318508 in words is "twelve million, three hundred eighteen thousand, five hundred eight".