12312112103 has 2 divisors, whose sum is σ = 12312112104. Its totient is φ = 12312112102.

The previous prime is 12312112093. The next prime is 12312112121. The reversal of 12312112103 is 30121121321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12312112103 - 2¹² = 12312108007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12312112123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156056051 + 6156056052.

It is an arithmetic number, because the mean of its divisors is an integer number (6156056052).

Almost surely, 2^12312112103 is an apocalyptic number.

12312112103 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312112103 is an equidigital number, since it uses as much as digits as its factorization.

12312112103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12312112103 its reverse (30121121321), we get a palindrome (42433233424).

The spelling of 12312112103 in words is "twelve billion, three hundred twelve million, one hundred twelve thousand, one hundred three".