100321816 has 24 divisors (see below), whose sum is σ = 218815020. Its totient is φ = 42994896.

The previous prime is 100321813. The next prime is 100321831. The reversal of 100321816 is 618123001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100321813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127570 + ... + 128353.

Almost surely, 2^100321816 is an apocalyptic number.

It is an amenable number.

100321816 is an abundant number, since it is smaller than the sum of its proper divisors (118493204).

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

100321816 is a wasteful number, since it uses less digits than its factorization.

100321816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255943 (or 255932 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 100321816 is about 10016.0778750966. The cubic root of 100321816 is about 464.6562627108.

Adding to 100321816 its reverse (618123001), we get a palindrome (718444817).

The spelling of 100321816 in words is "one hundred million, three hundred twenty-one thousand, eight hundred sixteen".