12781713 has 8 divisors (see below), whose sum is σ = 19476928. Its totient is φ = 7303824.

The previous prime is 12781669. The next prime is 12781723. The reversal of 12781713 is 31718721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12781713 - 2⁶ = 12781649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12781723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304306 + ... + 304347.

It is an arithmetic number, because the mean of its divisors is an integer number (2434616).

Almost surely, 2^12781713 is an apocalyptic number.

It is an amenable number.

12781713 is a deficient number, since it is larger than the sum of its proper divisors (6695215).

12781713 is an equidigital number, since it uses as much as digits as its factorization.

12781713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608663.

The product of its digits is 2352, while the sum is 30.

The square root of 12781713 is about 3575.1521645938. The cubic root of 12781713 is about 233.8099669799.

The spelling of 12781713 in words is "twelve million, seven hundred eighty-one thousand, seven hundred thirteen".