12312103 has 2 divisors, whose sum is σ = 12312104. Its totient is φ = 12312102.

The previous prime is 12312101. The next prime is 12312109. The reversal of 12312103 is 30121321.

It is a weak prime.

It is an emirp because it is prime and its reverse (30121321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12312103 - 2¹ = 12312101 is a prime.

Together with 12312101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12312101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156051 + 6156052.

It is an arithmetic number, because the mean of its divisors is an integer number (6156052).

Almost surely, 2^12312103 is an apocalyptic number.

12312103 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312103 is an equidigital number, since it uses as much as digits as its factorization.

12312103 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.

The square root of 12312103 is about 3508.8606412908. The cubic root of 12312103 is about 230.9107117923.

Adding to 12312103 its reverse (30121321), we get a palindrome (42433424).

The spelling of 12312103 in words is "twelve million, three hundred twelve thousand, one hundred three".