12831103 has 4 divisors (see below), whose sum is σ = 13022680. Its totient is φ = 12639528.

The previous prime is 12831097. The next prime is 12831127. The reversal of 12831103 is 30113821.

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 12831103 - 2⁹ = 12830591 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 (12831173) 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, 95688 + ... + 95821.

It is an arithmetic number, because the mean of its divisors is an integer number (3255670).

Almost surely, 2^12831103 is an apocalyptic number.

12831103 is a deficient number, since it is larger than the sum of its proper divisors (191577).

12831103 is an equidigital number, since it uses as much as digits as its factorization.

12831103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191576.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 12831103 is about 3582.0529030153. The cubic root of 12831103 is about 234.1107360556.

Adding to 12831103 its reverse (30113821), we get a palindrome (42944924).

The spelling of 12831103 in words is "twelve million, eight hundred thirty-one thousand, one hundred three".