104310021 has 4 divisors (see below), whose sum is σ = 139080032. Its totient is φ = 69540012.

The previous prime is 104310007. The next prime is 104310023. The reversal of 104310021 is 120013401.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120013401 = 3 ⋅40004467.

It is not a de Polignac number, because 104310021 - 2⁶ = 104309957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104309979 and 104310006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104310023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17385001 + ... + 17385006.

It is an arithmetic number, because the mean of its divisors is an integer number (34770008).

Almost surely, 2^104310021 is an apocalyptic number.

It is an amenable number.

104310021 is a deficient number, since it is larger than the sum of its proper divisors (34770011).

104310021 is an equidigital number, since it uses as much as digits as its factorization.

104310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34770010.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 104310021 is about 10213.2277464081. The cubic root of 104310021 is about 470.7337580500.

Adding to 104310021 its reverse (120013401), we get a palindrome (224323422).

The spelling of 104310021 in words is "one hundred four million, three hundred ten thousand, twenty-one".