30198871 has 2 divisors, whose sum is σ = 30198872. Its totient is φ = 30198870.

The previous prime is 30198841. The next prime is 30198887. The reversal of 30198871 is 17889103.

It is a strong prime.

It is an emirp because it is prime and its reverse (17889103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30198871 - 2¹¹ = 30196823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30198871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30198811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15099435 + 15099436.

It is an arithmetic number, because the mean of its divisors is an integer number (15099436).

Almost surely, 2^30198871 is an apocalyptic number.

30198871 is a deficient number, since it is larger than the sum of its proper divisors (1).

30198871 is an equidigital number, since it uses as much as digits as its factorization.

30198871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 30198871 is about 5495.3499433612. The cubic root of 30198871 is about 311.4083372592.

The spelling of 30198871 in words is "thirty million, one hundred ninety-eight thousand, eight hundred seventy-one".