12278713 has 4 divisors (see below), whose sum is σ = 12291328. Its totient is φ = 12266100.

The previous prime is 12278683. The next prime is 12278729. The reversal of 12278713 is 31787221.

12278713 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31787221 = 3137 ⋅10133.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12278713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12278753) 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, 4713 + ... + 6838.

It is an arithmetic number, because the mean of its divisors is an integer number (3072832).

Almost surely, 2^12278713 is an apocalyptic number.

It is an amenable number.

12278713 is a deficient number, since it is larger than the sum of its proper divisors (12615).

12278713 is a wasteful number, since it uses less digits than its factorization.

12278713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12614.

The product of its digits is 4704, while the sum is 31.

The square root of 12278713 is about 3504.0994563511. The cubic root of 12278713 is about 230.7017821714.

The spelling of 12278713 in words is "twelve million, two hundred seventy-eight thousand, seven hundred thirteen".