10313020321 has 4 divisors (see below), whose sum is σ = 10564557444. Its totient is φ = 10061483200.

The previous prime is 10313020259. The next prime is 10313020343. The reversal of 10313020321 is 12302031301.

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 1288020321 + 9025000000 = 35889^2 + 95000^2 .

It is a cyclic number.

It is not a de Polignac number, because 10313020321 - 2²³ = 10304631713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10313020295 and 10313020304.

It is not an unprimeable number, because it can be changed into a prime (10313020351) 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, 125768500 + ... + 125768581.

It is an arithmetic number, because the mean of its divisors is an integer number (2641139361).

Almost surely, 2^10313020321 is an apocalyptic number.

It is an amenable number.

10313020321 is a deficient number, since it is larger than the sum of its proper divisors (251537123).

10313020321 is an equidigital number, since it uses as much as digits as its factorization.

10313020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251537122.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 10313020321 its reverse (12302031301), we get a palindrome (22615051622).

The spelling of 10313020321 in words is "ten billion, three hundred thirteen million, twenty thousand, three hundred twenty-one".