30086971 has 4 divisors (see below), whose sum is σ = 30786712. Its totient is φ = 29387232.

The previous prime is 30086939. The next prime is 30086983. The reversal of 30086971 is 17968003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17968003 = 31 ⋅579613.

It is not a de Polignac number, because 30086971 - 2⁵ = 30086939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30086171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349806 + ... + 349891.

It is an arithmetic number, because the mean of its divisors is an integer number (7696678).

Almost surely, 2^30086971 is an apocalyptic number.

30086971 is a deficient number, since it is larger than the sum of its proper divisors (699741).

30086971 is an equidigital number, since it uses as much as digits as its factorization.

30086971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699740.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 30086971 is about 5485.1591590400. The cubic root of 30086971 is about 311.0232265887.

The spelling of 30086971 in words is "thirty million, eighty-six thousand, nine hundred seventy-one".