30321219 has 4 divisors (see below), whose sum is σ = 40428296. Its totient is φ = 20214144.

The previous prime is 30321197. The next prime is 30321229. The reversal of 30321219 is 91212303.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30321219 - 2⁷ = 30321091 is a prime.

It is a super-2 number, since 2×30321219² = 1838752643291922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30321195 and 30321204.

It is not an unprimeable number, because it can be changed into a prime (30321229) 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, 5053534 + ... + 5053539.

It is an arithmetic number, because the mean of its divisors is an integer number (10107074).

Almost surely, 2^30321219 is an apocalyptic number.

30321219 is a deficient number, since it is larger than the sum of its proper divisors (10107077).

30321219 is a wasteful number, since it uses less digits than its factorization.

30321219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10107076.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 30321219 is about 5506.4706482465. The cubic root of 30321219 is about 311.8283181870.

The spelling of 30321219 in words is "thirty million, three hundred twenty-one thousand, two hundred nineteen".