10303320421 has 4 divisors (see below), whose sum is σ = 10313412844. Its totient is φ = 10293228000.

The previous prime is 10303320359. The next prime is 10303320457. The reversal of 10303320421 is 12402330301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5452197921 + 4851122500 = 73839^2 + 69650^2 .

It is a cyclic number.

It is not a de Polignac number, because 10303320421 - 2¹¹ = 10303318373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10303320481) 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, 5044680 + ... + 5046721.

It is an arithmetic number, because the mean of its divisors is an integer number (2578353211).

Almost surely, 2^10303320421 is an apocalyptic number.

It is an amenable number.

10303320421 is a deficient number, since it is larger than the sum of its proper divisors (10092423).

10303320421 is a wasteful number, since it uses less digits than its factorization.

10303320421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10092422.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 10303320421 its reverse (12402330301), we get a palindrome (22705650722).

The spelling of 10303320421 in words is "ten billion, three hundred three million, three hundred twenty thousand, four hundred twenty-one".