123315103 has 4 divisors (see below), whose sum is σ = 123354648. Its totient is φ = 123275560.

The previous prime is 123315097. The next prime is 123315109. The reversal of 123315103 is 301513321.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (123315097) and next prime (123315109).

It is a cyclic number.

It is not a de Polignac number, because 123315103 - 2²¹ = 121217951 is a prime.

It is a super-2 number, since 2×123315103² = 30413229255801218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123315109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14653 + ... + 21478.

It is an arithmetic number, because the mean of its divisors is an integer number (30838662).

Almost surely, 2^123315103 is an apocalyptic number.

123315103 is a deficient number, since it is larger than the sum of its proper divisors (39545).

123315103 is an equidigital number, since it uses as much as digits as its factorization.

123315103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39544.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 123315103 is about 11104.7333601487. The cubic root of 123315103 is about 497.7433006059.

Adding to 123315103 its reverse (301513321), we get a palindrome (424828424).

The spelling of 123315103 in words is "one hundred twenty-three million, three hundred fifteen thousand, one hundred three".