1030321321 has 2 divisors, whose sum is σ = 1030321322. Its totient is φ = 1030321320.

The previous prime is 1030321319. The next prime is 1030321337. The reversal of 1030321321 is 1231230301.

It is an a-pointer prime, because the next prime (1030321337) can be obtained adding 1030321321 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1026561600 + 3759721 = 32040^2 + 1939^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030321321 - 2¹ = 1030321319 is a prime.

Together with 1030321319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1030321295 and 1030321304.

It is not a weakly prime, because it can be changed into another prime (1030321361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515160660 + 515160661.

It is an arithmetic number, because the mean of its divisors is an integer number (515160661).

Almost surely, 2^1030321321 is an apocalyptic number.

It is an amenable number.

1030321321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030321321 is an equidigital number, since it uses as much as digits as its factorization.

1030321321 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1030321321 is about 32098.6186774447. The cubic root of 1030321321 is about 1010.0066401550.

Adding to 1030321321 its reverse (1231230301), we get a palindrome (2261551622).

The spelling of 1030321321 in words is "one billion, thirty million, three hundred twenty-one thousand, three hundred twenty-one".