30643147 has 2 divisors, whose sum is σ = 30643148. Its totient is φ = 30643146.

The previous prime is 30643121. The next prime is 30643157. The reversal of 30643147 is 74134603.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30643147 - 2¹⁹ = 30118859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30643117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15321573 + 15321574.

It is an arithmetic number, because the mean of its divisors is an integer number (15321574).

Almost surely, 2^30643147 is an apocalyptic number.

30643147 is a deficient number, since it is larger than the sum of its proper divisors (1).

30643147 is an equidigital number, since it uses as much as digits as its factorization.

30643147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 30643147 is about 5535.6252582703. The cubic root of 30643147 is about 312.9280219102.

The spelling of 30643147 in words is "thirty million, six hundred forty-three thousand, one hundred forty-seven".