30845219 has 2 divisors, whose sum is σ = 30845220. Its totient is φ = 30845218.

The previous prime is 30845209. The next prime is 30845251. The reversal of 30845219 is 91254803.

It is an a-pointer prime, because the next prime (30845251) can be obtained adding 30845219 to its sum of digits (32).

It is a weak prime.

It is an emirp because it is prime and its reverse (91254803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30845219 - 2⁴ = 30845203 is a prime.

It is a super-2 number, since 2×30845219² = 1902855070315922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30845209) 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 as a sum of consecutive naturals, namely, 15422609 + 15422610.

It is an arithmetic number, because the mean of its divisors is an integer number (15422610).

Almost surely, 2^30845219 is an apocalyptic number.

30845219 is a deficient number, since it is larger than the sum of its proper divisors (1).

30845219 is an equidigital number, since it uses as much as digits as its factorization.

30845219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 30845219 is about 5553.8472251224. The cubic root of 30845219 is about 313.6143689782.

The spelling of 30845219 in words is "thirty million, eight hundred forty-five thousand, two hundred nineteen".