12712318 has 4 divisors (see below), whose sum is σ = 19068480. Its totient is φ = 6356158.

The previous prime is 12712313. The next prime is 12712321. The reversal of 12712318 is 81321721.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 12712292 and 12712301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12712313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3178078 + ... + 3178081.

It is an arithmetic number, because the mean of its divisors is an integer number (4767120).

Almost surely, 2^12712318 is an apocalyptic number.

12712318 is a deficient number, since it is larger than the sum of its proper divisors (6356162).

12712318 is an equidigital number, since it uses as much as digits as its factorization.

12712318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6356161.

The product of its digits is 672, while the sum is 25.

The square root of 12712318 is about 3565.4337744516. The cubic root of 12712318 is about 233.3860620064.

The spelling of 12712318 in words is "twelve million, seven hundred twelve thousand, three hundred eighteen".