30305219 has 8 divisors (see below), whose sum is σ = 34728960. Its totient is φ = 25905096.

The previous prime is 30305201. The next prime is 30305243. The reversal of 30305219 is 91250303.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-30305219 is a prime.

It is a super-2 number, since 2×30305219² = 1836812597275922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30305194 and 30305203.

It is not an unprimeable number, because it can be changed into a prime (30305279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3059 + ... + 8364.

It is an arithmetic number, because the mean of its divisors is an integer number (4341120).

Almost surely, 2^30305219 is an apocalyptic number.

30305219 is a deficient number, since it is larger than the sum of its proper divisors (4423741).

30305219 is a wasteful number, since it uses less digits than its factorization.

30305219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11809.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 30305219 is about 5505.0176203169. The cubic root of 30305219 is about 311.7734596744.

The spelling of 30305219 in words is "thirty million, three hundred five thousand, two hundred nineteen".