123110403 has 16 divisors (see below), whose sum is σ = 179773440. Its totient is φ = 74474784.

The previous prime is 123110399. The next prime is 123110411. The reversal of 123110403 is 304011321.

It is not a de Polignac number, because 123110403 - 2² = 123110399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123110473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24451 + ... + 29052.

It is an arithmetic number, because the mean of its divisors is an integer number (11235840).

Almost surely, 2^123110403 is an apocalyptic number.

123110403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123110403 is a deficient number, since it is larger than the sum of its proper divisors (56663037).

123110403 is a wasteful number, since it uses less digits than its factorization.

123110403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53578.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123110403 is about 11095.5127416447. The cubic root of 123110403 is about 497.4677342440.

Adding to 123110403 its reverse (304011321), we get a palindrome (427121724).

The spelling of 123110403 in words is "one hundred twenty-three million, one hundred ten thousand, four hundred three".