12731036 has 6 divisors (see below), whose sum is σ = 22279320. Its totient is φ = 6365516.

The previous prime is 12731027. The next prime is 12731039. The reversal of 12731036 is 63013721.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12731039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1591376 + ... + 1591383.

It is an arithmetic number, because the mean of its divisors is an integer number (3713220).

Almost surely, 2^12731036 is an apocalyptic number.

It is an amenable number.

12731036 is a deficient number, since it is larger than the sum of its proper divisors (9548284).

12731036 is a wasteful number, since it uses less digits than its factorization.

12731036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182763 (or 3182761 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 12731036 is about 3568.0577349589. The cubic root of 12731036 is about 233.5005540538.

Adding to 12731036 its reverse (63013721), we get a palindrome (75744757).

The spelling of 12731036 in words is "twelve million, seven hundred thirty-one thousand, thirty-six".