320630033 has 2 divisors, whose sum is σ = 320630034. Its totient is φ = 320630032.

The previous prime is 320630027. The next prime is 320630053. The reversal of 320630033 is 330036023.

It is an a-pointer prime, because the next prime (320630053) can be obtained adding 320630033 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232044289 + 88585744 = 15233^2 + 9412^2 .

It is a cyclic number.

It is not a de Polignac number, because 320630033 - 2⁴ = 320630017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320629987 and 320630014.

It is not a weakly prime, because it can be changed into another prime (320630053) 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 as a sum of consecutive naturals, namely, 160315016 + 160315017.

It is an arithmetic number, because the mean of its divisors is an integer number (160315017).

Almost surely, 2^320630033 is an apocalyptic number.

It is an amenable number.

320630033 is a deficient number, since it is larger than the sum of its proper divisors (1).

320630033 is an equidigital number, since it uses as much as digits as its factorization.

320630033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 320630033 is about 17906.1451183665. The cubic root of 320630033 is about 684.4389765897.

Adding to 320630033 its reverse (330036023), we get a palindrome (650666056).

The spelling of 320630033 in words is "three hundred twenty million, six hundred thirty thousand, thirty-three".