12711813 has 4 divisors (see below), whose sum is σ = 16949088. Its totient is φ = 8474540.

The previous prime is 12711799. The next prime is 12711821. The reversal of 12711813 is 31811721.

It is a happy number.

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 not a de Polignac number, because 12711813 - 2⁶ = 12711749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12711823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2118633 + ... + 2118638.

It is an arithmetic number, because the mean of its divisors is an integer number (4237272).

Almost surely, 2^12711813 is an apocalyptic number.

It is an amenable number.

12711813 is a deficient number, since it is larger than the sum of its proper divisors (4237275).

12711813 is an equidigital number, since it uses as much as digits as its factorization.

12711813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4237274.

The product of its digits is 336, while the sum is 24.

The square root of 12711813 is about 3565.3629548757. The cubic root of 12711813 is about 233.3829715256.

The spelling of 12711813 in words is "twelve million, seven hundred eleven thousand, eight hundred thirteen".