100243216 has 10 divisors (see below), whose sum is σ = 194221262. Its totient is φ = 50121600.

The previous prime is 100243201. The next prime is 100243217. The reversal of 100243216 is 612342001.

It can be written as a sum of positive squares in only one way, i.e., 74028816 + 26214400 = 8604^2 + 5120^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100243193 and 100243202.

It is not an unprimeable number, because it can be changed into a prime (100243217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3132585 + ... + 3132616.

Almost surely, 2^100243216 is an apocalyptic number.

100243216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

100243216 is a deficient number, since it is larger than the sum of its proper divisors (93978046).

100243216 is an equidigital number, since it uses as much as digits as its factorization.

100243216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6265209 (or 6265203 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 100243216 is about 10012.1534147255. The cubic root of 100243216 is about 464.5348815865.

Adding to 100243216 its reverse (612342001), we get a palindrome (712585217).

The spelling of 100243216 in words is "one hundred million, two hundred forty-three thousand, two hundred sixteen".