12031000123 has 2 divisors, whose sum is σ = 12031000124. Its totient is φ = 12031000122.

The previous prime is 12031000109. The next prime is 12031000129. The reversal of 12031000123 is 32100013021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12031000123 - 2⁹ = 12030999611 is a prime.

It is not a weakly prime, because it can be changed into another prime (12031000129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015500061 + 6015500062.

It is an arithmetic number, because the mean of its divisors is an integer number (6015500062).

Almost surely, 2^12031000123 is an apocalyptic number.

12031000123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031000123 is an equidigital number, since it uses as much as digits as its factorization.

12031000123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 12031000123 its reverse (32100013021), we get a palindrome (44131013144).

The spelling of 12031000123 in words is "twelve billion, thirty-one million, one hundred twenty-three", and thus it is an aban number.