12123123103231 has 32 divisors (see below), whose sum is σ = 14689228013568. Its totient is φ = 9783758171520.

The previous prime is 12123123103229. The next prime is 12123123103237. The reversal of 12123123103231 is 13230132132121.

It is a cyclic number.

It is not a de Polignac number, because 12123123103231 - 2¹ = 12123123103229 is a prime.

It is a super-3 number, since 3×12123123103231³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12123123103196 and 12123123103205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123123103237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 310646586 + ... + 310685608.

It is an arithmetic number, because the mean of its divisors is an integer number (459038375424).

Almost surely, 2^{12123123103231} is an apocalyptic number.

12123123103231 is a deficient number, since it is larger than the sum of its proper divisors (2566104910337).

12123123103231 is a wasteful number, since it uses less digits than its factorization.

12123123103231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77791.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 12123123103231 its reverse (13230132132121), we get a palindrome (25353255235352).

The spelling of 12123123103231 in words is "twelve trillion, one hundred twenty-three billion, one hundred twenty-three million, one hundred three thousand, two hundred thirty-one".