30471871 has 12 divisors (see below), whose sum is σ = 32733568. Its totient is φ = 28357632.

The previous prime is 30471869. The next prime is 30471887. The reversal of 30471871 is 17817403.

It is not a de Polignac number, because 30471871 - 2¹ = 30471869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30471811) 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 in 11 ways as a sum of consecutive naturals, for example, 27490 + ... + 28576.

Almost surely, 2^30471871 is an apocalyptic number.

30471871 is a deficient number, since it is larger than the sum of its proper divisors (2261697).

30471871 is a wasteful number, since it uses less digits than its factorization.

30471871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 1201 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 30471871 is about 5520.1332411455. The cubic root of 30471871 is about 312.3439083930.

The spelling of 30471871 in words is "thirty million, four hundred seventy-one thousand, eight hundred seventy-one".