30442219 has 2 divisors, whose sum is σ = 30442220. Its totient is φ = 30442218.

The previous prime is 30442211. The next prime is 30442259. The reversal of 30442219 is 91224403.

It is a weak prime.

It is an emirp because it is prime and its reverse (91224403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30442219 - 2³ = 30442211 is a prime.

It is a super-2 number, since 2×30442219² = 1853457395287922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30442193 and 30442202.

It is not a weakly prime, because it can be changed into another prime (30442211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15221109 + 15221110.

It is an arithmetic number, because the mean of its divisors is an integer number (15221110).

Almost surely, 2^30442219 is an apocalyptic number.

30442219 is a deficient number, since it is larger than the sum of its proper divisors (1).

30442219 is an equidigital number, since it uses as much as digits as its factorization.

30442219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 30442219 is about 5517.4467827067. The cubic root of 30442219 is about 312.2425621673.

The spelling of 30442219 in words is "thirty million, four hundred forty-two thousand, two hundred nineteen".