321030013 has 2 divisors, whose sum is σ = 321030014. Its totient is φ = 321030012.

The previous prime is 321030001. The next prime is 321030043. The reversal of 321030013 is 310030123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249576804 + 71453209 = 15798^2 + 8453^2 .

It is a cyclic number.

It is not a de Polignac number, because 321030013 - 2¹³ = 321021821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321029975 and 321030002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321030043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160515006 + 160515007.

It is an arithmetic number, because the mean of its divisors is an integer number (160515007).

Almost surely, 2^321030013 is an apocalyptic number.

It is an amenable number.

321030013 is a deficient number, since it is larger than the sum of its proper divisors (1).

321030013 is an equidigital number, since it uses as much as digits as its factorization.

321030013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 321030013 is about 17917.3104287446. The cubic root of 321030013 is about 684.7234666197.

Adding to 321030013 its reverse (310030123), we get a palindrome (631060136).

The spelling of 321030013 in words is "three hundred twenty-one million, thirty thousand, thirteen".