100203236 has 108 divisors (see below), whose sum is σ = 227836980. Its totient is φ = 38384640.

The previous prime is 100203199. The next prime is 100203247. The reversal of 100203236 is 632302001.

It can be written as a sum of positive squares in 6 ways, for example, as 3136 + 100200100 = 56^2 + 10010^2 .

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

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 35 ways as a sum of consecutive naturals, for example, 1642646 + ... + 1642706.

Almost surely, 2^100203236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100203236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113918490).

100203236 is an abundant number, since it is smaller than the sum of its proper divisors (127633744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100203236 is a wasteful number, since it uses less digits than its factorization.

100203236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 100203236 is about 10010.1566421310. The cubic root of 100203236 is about 464.4731165617.

Adding to 100203236 its reverse (632302001), we get a palindrome (732505237).

The spelling of 100203236 in words is "one hundred million, two hundred three thousand, two hundred thirty-six".