30473147 has 2 divisors, whose sum is σ = 30473148. Its totient is φ = 30473146.

The previous prime is 30473143. The next prime is 30473153. The reversal of 30473147 is 74137403.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30473147 - 2² = 30473143 is a prime.

It is a super-2 number, since 2×30473147² = 1857225376167218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30473143) 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 as a sum of consecutive naturals, namely, 15236573 + 15236574.

It is an arithmetic number, because the mean of its divisors is an integer number (15236574).

Almost surely, 2^30473147 is an apocalyptic number.

30473147 is a deficient number, since it is larger than the sum of its proper divisors (1).

30473147 is an equidigital number, since it uses as much as digits as its factorization.

30473147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 30473147 is about 5520.2488168560. The cubic root of 30473147 is about 312.3482680997.

The spelling of 30473147 in words is "thirty million, four hundred seventy-three thousand, one hundred forty-seven".