12123003231 has 24 divisors (see below), whose sum is σ = 18296918016. Its totient is φ = 7720218000.

The previous prime is 12123003227. The next prime is 12123003247. The reversal of 12123003231 is 13230032121.

It is not a de Polignac number, because 12123003231 - 2² = 12123003227 is a prime.

It is a super-2 number, since 2×12123003231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123003271) 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 23 ways as a sum of consecutive naturals, for example, 116466 + ... + 194448.

It is an arithmetic number, because the mean of its divisors is an integer number (762371584).

Almost surely, 2^12123003231 is an apocalyptic number.

12123003231 is a deficient number, since it is larger than the sum of its proper divisors (6173914785).

12123003231 is a wasteful number, since it uses less digits than its factorization.

12123003231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78763 (or 78760 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12123003231 its reverse (13230032121), we get a palindrome (25353035352).

The spelling of 12123003231 in words is "twelve billion, one hundred twenty-three million, three thousand, two hundred thirty-one".