30111147 has 12 divisors (see below), whose sum is σ = 47448024. Its totient is φ = 18249120.

The previous prime is 30111139. The next prime is 30111149. The reversal of 30111147 is 74111103.

It is not a de Polignac number, because 30111147 - 2³ = 30111139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30111149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151978 + ... + 152175.

It is an arithmetic number, because the mean of its divisors is an integer number (3954002).

Almost surely, 2^30111147 is an apocalyptic number.

30111147 is a deficient number, since it is larger than the sum of its proper divisors (17336877).

30111147 is a wasteful number, since it uses less digits than its factorization.

30111147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304170 (or 304167 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 30111147 is about 5487.3624811926. The cubic root of 30111147 is about 311.1065105282.

The spelling of 30111147 in words is "thirty million, one hundred eleven thousand, one hundred forty-seven".