30102071 has 2 divisors, whose sum is σ = 30102072. Its totient is φ = 30102070.

The previous prime is 30102047. The next prime is 30102089. The reversal of 30102071 is 17020103.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30102071 is a prime.

It is a super-2 number, since 2×30102071² = 1812269356978082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30102031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15051035 + 15051036.

It is an arithmetic number, because the mean of its divisors is an integer number (15051036).

Almost surely, 2^30102071 is an apocalyptic number.

30102071 is a deficient number, since it is larger than the sum of its proper divisors (1).

30102071 is an equidigital number, since it uses as much as digits as its factorization.

30102071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 30102071 is about 5486.5354277540. The cubic root of 30102071 is about 311.0752498300.

Adding to 30102071 its reverse (17020103), we get a palindrome (47122174).

The spelling of 30102071 in words is "thirty million, one hundred two thousand, seventy-one".