100320205 has 4 divisors (see below), whose sum is σ = 120384252. Its totient is φ = 80256160.

The previous prime is 100320197. The next prime is 100320211. The reversal of 100320205 is 502023001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 76632516 + 23687689 = 8754^2 + 4867^2 .

It is not a de Polignac number, because 100320205 - 2³ = 100320197 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 10032016 + ... + 10032025.

It is an arithmetic number, because the mean of its divisors is an integer number (30096063).

Almost surely, 2^100320205 is an apocalyptic number.

It is an amenable number.

100320205 is a deficient number, since it is larger than the sum of its proper divisors (20064047).

100320205 is an equidigital number, since it uses as much as digits as its factorization.

100320205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20064046.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 100320205 is about 10015.9974540732. The cubic root of 100320205 is about 464.6537754976.

Adding to 100320205 its reverse (502023001), we get a palindrome (602343206).

The spelling of 100320205 in words is "one hundred million, three hundred twenty thousand, two hundred five".