30385219 has 4 divisors (see below), whose sum is σ = 31091896. Its totient is φ = 29678544.

The previous prime is 30385213. The next prime is 30385247. The reversal of 30385219 is 91258303.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91258303 = 137 ⋅666119.

It is a cyclic number.

It is not a de Polignac number, because 30385219 - 2³ = 30385211 is a prime.

It is a super-2 number, since 2×30385219² = 1846523067355922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30385211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353274 + ... + 353359.

It is an arithmetic number, because the mean of its divisors is an integer number (7772974).

Almost surely, 2^30385219 is an apocalyptic number.

30385219 is a deficient number, since it is larger than the sum of its proper divisors (706677).

30385219 is an equidigital number, since it uses as much as digits as its factorization.

30385219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706676.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 30385219 is about 5512.2789298075. The cubic root of 30385219 is about 312.0475594550.

The spelling of 30385219 in words is "thirty million, three hundred eighty-five thousand, two hundred nineteen".