10304144021 has 4 divisors (see below), whose sum is σ = 10373299500. Its totient is φ = 10234988544.

The previous prime is 10304143991. The next prime is 10304144027. The reversal of 10304144021 is 12044140301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12044140301 = 21817 ⋅552053.

It can be written as a sum of positive squares in 2 ways, for example, as 5409602500 + 4894541521 = 73550^2 + 69961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10304144021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10304143984 and 10304144002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10304144027) 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, 34577516 + ... + 34577813.

It is an arithmetic number, because the mean of its divisors is an integer number (2593324875).

Almost surely, 2^10304144021 is an apocalyptic number.

It is an amenable number.

10304144021 is a deficient number, since it is larger than the sum of its proper divisors (69155479).

10304144021 is an equidigital number, since it uses as much as digits as its factorization.

10304144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69155478.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 10304144021 its reverse (12044140301), we get a palindrome (22348284322).

The spelling of 10304144021 in words is "ten billion, three hundred four million, one hundred forty-four thousand, twenty-one".