30145133 has 2 divisors, whose sum is σ = 30145134. Its totient is φ = 30145132.

The previous prime is 30145081. The next prime is 30145139. The reversal of 30145133 is 33154103.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23164969 + 6980164 = 4813^2 + 2642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30145133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30145139) 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, 15072566 + 15072567.

It is an arithmetic number, because the mean of its divisors is an integer number (15072567).

Almost surely, 2^30145133 is an apocalyptic number.

It is an amenable number.

30145133 is a deficient number, since it is larger than the sum of its proper divisors (1).

30145133 is an equidigital number, since it uses as much as digits as its factorization.

30145133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 30145133 is about 5490.4583597365. The cubic root of 30145133 is about 311.2235136034.

Adding to 30145133 its reverse (33154103), we get a palindrome (63299236).

The spelling of 30145133 in words is "thirty million, one hundred forty-five thousand, one hundred thirty-three".