Search a number
-
+
30130033 is a prime number
BaseRepresentation
bin111001011101…
…1111101110001
32002200202122011
41302323331301
530203130113
62553442521
7514046443
oct162737561
962622564
1030130033
111600a15a
12a110441
13631c22b
144004493
1529a263d
hex1cbbf71

30130033 has 2 divisors, whose sum is σ = 30130034. Its totient is φ = 30130032.

The previous prime is 30130031. The next prime is 30130049. The reversal of 30130033 is 33003103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28217344 + 1912689 = 5312^2 + 1383^2 .

It is a cyclic number.

It is not a de Polignac number, because 30130033 - 21 = 30130031 is a prime.

Together with 30130031, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 30129995 and 30130022.

It is not a weakly prime, because it can be changed into another prime (30130031) 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, 15065016 + 15065017.

It is an arithmetic number, because the mean of its divisors is an integer number (15065017).

Almost surely, 230130033 is an apocalyptic number.

It is an amenable number.

30130033 is a deficient number, since it is larger than the sum of its proper divisors (1).

30130033 is an equidigital number, since it uses as much as digits as its factorization.

30130033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 13.

The square root of 30130033 is about 5489.0830746127. The cubic root of 30130033 is about 311.1715399294.

Adding to 30130033 its reverse (33003103), we get a palindrome (63133136).

The spelling of 30130033 in words is "thirty million, one hundred thirty thousand, thirty-three".