100030321 has 2 divisors, whose sum is σ = 100030322. Its totient is φ = 100030320.

The previous prime is 100030319. The next prime is 100030327. The reversal of 100030321 is 123030001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78127921 + 21902400 = 8839^2 + 4680^2 .

It is a cyclic number.

It is not a de Polignac number, because 100030321 - 2¹ = 100030319 is a prime.

Together with 100030319, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 100030298 and 100030307.

It is not a weakly prime, because it can be changed into another prime (100030327) by changing a digit.

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 as a sum of consecutive naturals, namely, 50015160 + 50015161.

It is an arithmetic number, because the mean of its divisors is an integer number (50015161).

Almost surely, 2^100030321 is an apocalyptic number.

It is an amenable number.

100030321 is a deficient number, since it is larger than the sum of its proper divisors (1).

100030321 is an equidigital number, since it uses as much as digits as its factorization.

100030321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 100030321 is about 10001.5159350970. The cubic root of 100030321 is about 464.2057911590.

Adding to 100030321 its reverse (123030001), we get a palindrome (223060322).

The spelling of 100030321 in words is "one hundred million, thirty thousand, three hundred twenty-one".