30105071 has 2 divisors, whose sum is σ = 30105072. Its totient is φ = 30105070.

The previous prime is 30105067. The next prime is 30105077. The reversal of 30105071 is 17050103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30105071 - 2² = 30105067 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30105077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15052535 + 15052536.

It is an arithmetic number, because the mean of its divisors is an integer number (15052536).

Almost surely, 2^30105071 is an apocalyptic number.

30105071 is a deficient number, since it is larger than the sum of its proper divisors (1).

30105071 is an equidigital number, since it uses as much as digits as its factorization.

30105071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105, while the sum is 17.

The square root of 30105071 is about 5486.8088175186. The cubic root of 30105071 is about 311.0855835016.

Adding to 30105071 its reverse (17050103), we get a palindrome (47155174).

The spelling of 30105071 in words is "thirty million, one hundred five thousand, seventy-one".