103105503 has 12 divisors (see below), whose sum is σ = 149189040. Its totient is φ = 68617536.

The previous prime is 103105501. The next prime is 103105517. The reversal of 103105503 is 305501301.

It is a happy number.

103105503 is a `hidden beast` number, since 103 + 10 + 550 + 3 = 666.

It is not a de Polignac number, because 103105503 - 2¹ = 103105501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103105501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4323 + ... + 14996.

It is an arithmetic number, because the mean of its divisors is an integer number (12432420).

Almost surely, 2^103105503 is an apocalyptic number.

103105503 is a deficient number, since it is larger than the sum of its proper divisors (46083537).

103105503 is a wasteful number, since it uses less digits than its factorization.

103105503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19918 (or 19915 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 103105503 is about 10154.0879944976. The cubic root of 103105503 is about 468.9148088211.

Adding to 103105503 its reverse (305501301), we get a palindrome (408606804).

The spelling of 103105503 in words is "one hundred three million, one hundred five thousand, five hundred three".