100321236 has 72 divisors (see below), whose sum is σ = 261541280. Its totient is φ = 32405184.

The previous prime is 100321223. The next prime is 100321261. The reversal of 100321236 is 632123001.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 354351 + ... + 354633.

Almost surely, 2^100321236 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 100321236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130770640).

100321236 is an abundant number, since it is smaller than the sum of its proper divisors (161220044).

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

100321236 is a wasteful number, since it uses less digits than its factorization.

100321236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 100321236 is about 10016.0489216058. The cubic root of 100321236 is about 464.6553672554.

Adding to 100321236 its reverse (632123001), we get a palindrome (732444237).

The spelling of 100321236 in words is "one hundred million, three hundred twenty-one thousand, two hundred thirty-six".