123312103 has 2 divisors, whose sum is σ = 123312104. Its totient is φ = 123312102.

The previous prime is 123312061. The next prime is 123312107. The reversal of 123312103 is 301213321.

It is a strong prime.

It is an emirp because it is prime and its reverse (301213321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123312103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123312107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61656051 + 61656052.

It is an arithmetic number, because the mean of its divisors is an integer number (61656052).

Almost surely, 2^123312103 is an apocalyptic number.

123312103 is a deficient number, since it is larger than the sum of its proper divisors (1).

123312103 is an equidigital number, since it uses as much as digits as its factorization.

123312103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 123312103 is about 11104.5982817930. The cubic root of 123312103 is about 497.7392642201.

Adding to 123312103 its reverse (301213321), we get a palindrome (424525424).

The spelling of 123312103 in words is "one hundred twenty-three million, three hundred twelve thousand, one hundred three".