12331203123 has 16 divisors (see below), whose sum is σ = 16631775360. Its totient is φ = 8126054976.

The previous prime is 12331203119. The next prime is 12331203127. The reversal of 12331203123 is 32130213321.

It is an interprime number because it is at equal distance from previous prime (12331203119) and next prime (12331203127).

It is not a de Polignac number, because 12331203123 - 2² = 12331203119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12331203123.

It is not an unprimeable number, because it can be changed into a prime (12331203127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104668 + ... + 188726.

It is an arithmetic number, because the mean of its divisors is an integer number (1039485960).

Almost surely, 2^12331203123 is an apocalyptic number.

12331203123 is a deficient number, since it is larger than the sum of its proper divisors (4300572237).

12331203123 is a wasteful number, since it uses less digits than its factorization.

12331203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84626.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12331203123 its reverse (32130213321), we get a palindrome (44461416444).

The spelling of 12331203123 in words is "twelve billion, three hundred thirty-one million, two hundred three thousand, one hundred twenty-three".