30120143171 has 2 divisors, whose sum is σ = 30120143172. Its totient is φ = 30120143170.

The previous prime is 30120143149. The next prime is 30120143191. The reversal of 30120143171 is 17134102103.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30120143171 - 2¹⁰ = 30120142147 is a prime.

It is not a weakly prime, because it can be changed into another prime (30120143191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060071585 + 15060071586.

It is an arithmetic number, because the mean of its divisors is an integer number (15060071586).

Almost surely, 2^30120143171 is an apocalyptic number.

30120143171 is a deficient number, since it is larger than the sum of its proper divisors (1).

30120143171 is an equidigital number, since it uses as much as digits as its factorization.

30120143171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 30120143171 its reverse (17134102103), we get a palindrome (47254245274).

The spelling of 30120143171 in words is "thirty billion, one hundred twenty million, one hundred forty-three thousand, one hundred seventy-one".