12730271 has 4 divisors (see below), whose sum is σ = 12754344. Its totient is φ = 12706200.

The previous prime is 12730169. The next prime is 12730283. The reversal of 12730271 is 17203721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12730271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12739271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11225 + ... + 12306.

It is an arithmetic number, because the mean of its divisors is an integer number (3188586).

Almost surely, 2^12730271 is an apocalyptic number.

12730271 is a deficient number, since it is larger than the sum of its proper divisors (24073).

12730271 is an equidigital number, since it uses as much as digits as its factorization.

12730271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24072.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 12730271 is about 3567.9505321683. The cubic root of 12730271 is about 233.4958769927.

Adding to 12730271 its reverse (17203721), we get a palindrome (29933992).

The spelling of 12730271 in words is "twelve million, seven hundred thirty thousand, two hundred seventy-one".