12797831 has 4 divisors (see below), whose sum is σ = 12807600. Its totient is φ = 12788064.

The previous prime is 12797809. The next prime is 12797833. The reversal of 12797831 is 13879721.

12797831 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 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-12797831 is a prime.

It is a super-2 number, since 2×12797831² = 327568956609122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12797833) 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, 2546 + ... + 5663.

It is an arithmetic number, because the mean of its divisors is an integer number (3201900).

Almost surely, 2^12797831 is an apocalyptic number.

12797831 is a deficient number, since it is larger than the sum of its proper divisors (9769).

12797831 is an equidigital number, since it uses as much as digits as its factorization.

12797831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9768.

The product of its digits is 21168, while the sum is 38.

The square root of 12797831 is about 3577.4056241919. The cubic root of 12797831 is about 233.9082054055.

The spelling of 12797831 in words is "twelve million, seven hundred ninety-seven thousand, eight hundred thirty-one".