12831727 has 4 divisors (see below), whose sum is σ = 12840256. Its totient is φ = 12823200.

The previous prime is 12831701. The next prime is 12831739. The reversal of 12831727 is 72713821.

12831727 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 brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12831727 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 (12831757) 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, 1338 + ... + 5239.

It is an arithmetic number, because the mean of its divisors is an integer number (3210064).

Almost surely, 2^12831727 is an apocalyptic number.

12831727 is a deficient number, since it is larger than the sum of its proper divisors (8529).

12831727 is an equidigital number, since it uses as much as digits as its factorization.

12831727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8528.

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

The square root of 12831727 is about 3582.1400028475. The cubic root of 12831727 is about 234.1145310718.

The spelling of 12831727 in words is "twelve million, eight hundred thirty-one thousand, seven hundred twenty-seven".