100021323 has 8 divisors (see below), whose sum is σ = 136966288. Its totient is φ = 64878624.

The previous prime is 100021309. The next prime is 100021331. The reversal of 100021323 is 323120001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100021323 - 2⁴ = 100021307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100021299 and 100021308.

It is not an unprimeable number, because it can be changed into a prime (100021303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450436 + ... + 450657.

It is an arithmetic number, because the mean of its divisors is an integer number (17120786).

Almost surely, 2^100021323 is an apocalyptic number.

100021323 is a deficient number, since it is larger than the sum of its proper divisors (36944965).

100021323 is an equidigital number, since it uses as much as digits as its factorization.

100021323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901133.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 100021323 is about 10001.0660931723. The cubic root of 100021323 is about 464.1918718829.

Adding to 100021323 its reverse (323120001), we get a palindrome (423141324).

It can be divided in two parts, 10002 and 1323, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 100021323 in words is "one hundred million, twenty-one thousand, three hundred twenty-three".