12863213 has 4 divisors (see below), whose sum is σ = 14032608. Its totient is φ = 11693820.

The previous prime is 12863177. The next prime is 12863251. The reversal of 12863213 is 31236821.

12863213 is digitally balanced in base 2, 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12863213 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 (12863293) 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, 584681 + ... + 584702.

It is an arithmetic number, because the mean of its divisors is an integer number (3508152).

Almost surely, 2^12863213 is an apocalyptic number.

It is an amenable number.

12863213 is a deficient number, since it is larger than the sum of its proper divisors (1169395).

12863213 is a wasteful number, since it uses less digits than its factorization.

12863213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169394.

The product of its digits is 1728, while the sum is 26.

The square root of 12863213 is about 3586.5321691015. The cubic root of 12863213 is about 234.3058617521.

The spelling of 12863213 in words is "twelve million, eight hundred sixty-three thousand, two hundred thirteen".