12103013231 has 4 divisors (see below), whose sum is σ = 12115794552. Its totient is φ = 12090231912.

The previous prime is 12103013227. The next prime is 12103013267. The reversal of 12103013231 is 13231030121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13231030121 = 233 ⋅56785537.

It is a cyclic number.

It is not a de Polignac number, because 12103013231 - 2² = 12103013227 is a prime.

It is a super-2 number, since 2×12103013231² (a number of 21 digits) 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 (12103013291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6389240 + ... + 6391133.

It is an arithmetic number, because the mean of its divisors is an integer number (3028948638).

Almost surely, 2^12103013231 is an apocalyptic number.

12103013231 is a deficient number, since it is larger than the sum of its proper divisors (12781321).

12103013231 is an equidigital number, since it uses as much as digits as its factorization.

12103013231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12781320.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12103013231 its reverse (13231030121), we get a palindrome (25334043352).

The spelling of 12103013231 in words is "twelve billion, one hundred three million, thirteen thousand, two hundred thirty-one".