30319189 has 4 divisors (see below), whose sum is σ = 30333420. Its totient is φ = 30304960.

The previous prime is 30319187. The next prime is 30319217. The reversal of 30319189 is 98191303.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7518564 + 22800625 = 2742^2 + 4775^2 .

It is a cyclic number.

It is not a de Polignac number, because 30319189 - 2¹ = 30319187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30319187) 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, 3202 + ... + 8419.

It is an arithmetic number, because the mean of its divisors is an integer number (7583355).

Almost surely, 2^30319189 is an apocalyptic number.

It is an amenable number.

30319189 is a deficient number, since it is larger than the sum of its proper divisors (14231).

30319189 is a wasteful number, since it uses less digits than its factorization.

30319189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14230.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 30319189 is about 5506.2863165658. The cubic root of 30319189 is about 311.8213590823.

The spelling of 30319189 in words is "thirty million, three hundred nineteen thousand, one hundred eighty-nine".