12103144231 has 4 divisors (see below), whose sum is σ = 12103489864. Its totient is φ = 12102798600.

The previous prime is 12103144201. The next prime is 12103144247. The reversal of 12103144231 is 13244130121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13244130121 = 151 ⋅87709471.

It is a cyclic number.

It is not a de Polignac number, because 12103144231 - 2⁹ = 12103143719 is a prime.

It is a super-2 number, since 2×12103144231² (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 (12103144201) 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, 113505 + ... + 192586.

It is an arithmetic number, because the mean of its divisors is an integer number (3025872466).

Almost surely, 2^12103144231 is an apocalyptic number.

12103144231 is a deficient number, since it is larger than the sum of its proper divisors (345633).

12103144231 is an equidigital number, since it uses as much as digits as its factorization.

12103144231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345632.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12103144231 its reverse (13244130121), we get a palindrome (25347274352).

The spelling of 12103144231 in words is "twelve billion, one hundred three million, one hundred forty-four thousand, two hundred thirty-one".