100316621 has 4 divisors (see below), whose sum is σ = 101813952. Its totient is φ = 98819292.

The previous prime is 100316611. The next prime is 100316641. The reversal of 100316621 is 126613001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100316621 - 2¹⁸ = 100054477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100316593 and 100316602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100316611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748565 + ... + 748698.

It is an arithmetic number, because the mean of its divisors is an integer number (25453488).

Almost surely, 2^100316621 is an apocalyptic number.

It is an amenable number.

100316621 is a deficient number, since it is larger than the sum of its proper divisors (1497331).

100316621 is an equidigital number, since it uses as much as digits as its factorization.

100316621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497330.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 100316621 is about 10015.8185386917. The cubic root of 100316621 is about 464.6482420860.

Adding to 100316621 its reverse (126613001), we get a palindrome (226929622).

The spelling of 100316621 in words is "one hundred million, three hundred sixteen thousand, six hundred twenty-one".