12711320 has 16 divisors (see below), whose sum is σ = 28600560. Its totient is φ = 5084512.

The previous prime is 12711287. The next prime is 12711329. The reversal of 12711320 is 2311721.

12711320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12711320² = 323155312284800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12711329) 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, 158852 + ... + 158931.

It is an arithmetic number, because the mean of its divisors is an integer number (1787535).

Almost surely, 2^12711320 is an apocalyptic number.

12711320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12711320 is an abundant number, since it is smaller than the sum of its proper divisors (15889240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12711320 is a wasteful number, since it uses less digits than its factorization.

12711320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317794 (or 317790 counting only the distinct ones).

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

The square root of 12711320 is about 3565.2938167842. The cubic root of 12711320 is about 233.3799544031.

It can be divided in two parts, 12711 and 320, that added together give a palindrome (13031).

The spelling of 12711320 in words is "twelve million, seven hundred eleven thousand, three hundred twenty".