12133123231 has 8 divisors (see below), whose sum is σ = 12697144704. Its totient is φ = 11572143000.

The previous prime is 12133123229. The next prime is 12133123237. The reversal of 12133123231 is 13232133121.

12133123231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12133123231 - 2¹ = 12133123229 is a prime.

It is a super-2 number, since 2×12133123231² (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 (12133123237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752145 + ... + 768106.

It is an arithmetic number, because the mean of its divisors is an integer number (1587143088).

Almost surely, 2^12133123231 is an apocalyptic number.

12133123231 is a deficient number, since it is larger than the sum of its proper divisors (564021473).

12133123231 is a wasteful number, since it uses less digits than its factorization.

12133123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520621.

The product of its digits is 648, while the sum is 22.

Adding to 12133123231 its reverse (13232133121), we get a palindrome (25365256352).

The spelling of 12133123231 in words is "twelve billion, one hundred thirty-three million, one hundred twenty-three thousand, two hundred thirty-one".