100103505 has 16 divisors (see below), whose sum is σ = 165689280. Its totient is φ = 51547328.

The previous prime is 100103489. The next prime is 100103543. The reversal of 100103505 is 505301001.

It is a cyclic number.

It is not a de Polignac number, because 100103505 - 2⁴ = 100103489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 114627 + ... + 115496.

It is an arithmetic number, because the mean of its divisors is an integer number (10355580).

Almost surely, 2^100103505 is an apocalyptic number.

100103505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100103505 is a deficient number, since it is larger than the sum of its proper divisors (65585775).

100103505 is a wasteful number, since it uses less digits than its factorization.

100103505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230160.

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 100103505 is about 10005.1739115320. The cubic root of 100103505 is about 464.3189706919.

Adding to 100103505 its reverse (505301001), we get a palindrome (605404506).

The spelling of 100103505 in words is "one hundred million, one hundred three thousand, five hundred five".