12710321 has 6 divisors (see below), whose sum is σ = 13763430. Its totient is φ = 11732448.

The previous prime is 12710317. The next prime is 12710333. The reversal of 12710321 is 12301721.

12710321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 883600 + 11826721 = 940^2 + 3439^2 .

It is not a de Polignac number, because 12710321 - 2² = 12710317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12710321.

It is not an unprimeable number, because it can be changed into a prime (12710521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37436 + ... + 37773.

It is an arithmetic number, because the mean of its divisors is an integer number (2293905).

Almost surely, 2^12710321 is an apocalyptic number.

It is an amenable number.

12710321 is a deficient number, since it is larger than the sum of its proper divisors (1053109).

12710321 is an equidigital number, since it uses as much as digits as its factorization.

12710321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75235 (or 75222 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 12710321 is about 3565.1537133762. The cubic root of 12710321 is about 233.3738403598.

It can be divided in two parts, 12710 and 321, that added together give a palindrome (13031).

The spelling of 12710321 in words is "twelve million, seven hundred ten thousand, three hundred twenty-one".