100421323 has 2 divisors, whose sum is σ = 100421324. Its totient is φ = 100421322.

The previous prime is 100421317. The next prime is 100421333. The reversal of 100421323 is 323124001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100421323 - 2¹⁷ = 100290251 is a prime.

It is a super-2 number, since 2×100421323² = 20168884226140658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100421297 and 100421306.

It is not a weakly prime, because it can be changed into another prime (100421303) 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, 50210661 + 50210662.

It is an arithmetic number, because the mean of its divisors is an integer number (50210662).

Almost surely, 2^100421323 is an apocalyptic number.

100421323 is a deficient number, since it is larger than the sum of its proper divisors (1).

100421323 is an equidigital number, since it uses as much as digits as its factorization.

100421323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 100421323 is about 10021.0440074874. The cubic root of 100421323 is about 464.8098393837.

Adding to 100421323 its reverse (323124001), we get a palindrome (423545324).

The spelling of 100421323 in words is "one hundred million, four hundred twenty-one thousand, three hundred twenty-three".