100303145 has 16 divisors (see below), whose sum is σ = 128025360. Its totient is φ = 75177984.

The previous prime is 100303139. The next prime is 100303157. The reversal of 100303145 is 541303001.

It can be written as a sum of positive squares in 8 ways, for example, as 15460624 + 84842521 = 3932^2 + 9211^2 .

It is a cyclic number.

It is not a de Polignac number, because 100303145 - 2⁶ = 100303081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16889 + ... + 22041.

It is an arithmetic number, because the mean of its divisors is an integer number (8001585).

Almost surely, 2^100303145 is an apocalyptic number.

It is an amenable number.

100303145 is a deficient number, since it is larger than the sum of its proper divisors (27722215).

100303145 is a wasteful number, since it uses less digits than its factorization.

100303145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5404.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 100303145 is about 10015.1457802670. The cubic root of 100303145 is about 464.6274350317.

Adding to 100303145 its reverse (541303001), we get a palindrome (641606146).

The spelling of 100303145 in words is "one hundred million, three hundred three thousand, one hundred forty-five".