100320203 has 4 divisors (see below), whose sum is σ = 100643088. Its totient is φ = 99997320.

The previous prime is 100320197. The next prime is 100320211. The reversal of 100320203 is 302023001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302023001 = 7 ⋅43146143.

It is a cyclic number.

It is not a de Polignac number, because 100320203 - 2⁶ = 100320139 is a prime.

It is a super-2 number, since 2×100320203² = 20128286259922418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100320263) by changing a digit.

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, 160976 + ... + 161597.

It is an arithmetic number, because the mean of its divisors is an integer number (25160772).

Almost surely, 2^100320203 is an apocalyptic number.

100320203 is a deficient number, since it is larger than the sum of its proper divisors (322885).

100320203 is an equidigital number, since it uses as much as digits as its factorization.

100320203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322884.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 100320203 is about 10015.9973542329. The cubic root of 100320203 is about 464.6537724098.

Adding to 100320203 its reverse (302023001), we get a palindrome (402343204).

The spelling of 100320203 in words is "one hundred million, three hundred twenty thousand, two hundred three".