12718031 has 4 divisors (see below), whose sum is σ = 12733632. Its totient is φ = 12702432.

The previous prime is 12718019. The next prime is 12718033. The reversal of 12718031 is 13081721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12718031 - 2¹⁰ = 12717007 is a prime.

It is a super-2 number, since 2×12718031² = 323496625033922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12717988 and 12718006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12718033) 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, 6506 + ... + 8231.

It is an arithmetic number, because the mean of its divisors is an integer number (3183408).

Almost surely, 2^12718031 is an apocalyptic number.

12718031 is a deficient number, since it is larger than the sum of its proper divisors (15601).

12718031 is an equidigital number, since it uses as much as digits as its factorization.

12718031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15600.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 12718031 is about 3566.2348492493. The cubic root of 12718031 is about 233.4210185183.

Adding to 12718031 its reverse (13081721), we get a palindrome (25799752).

The spelling of 12718031 in words is "twelve million, seven hundred eighteen thousand, thirty-one".