30319989 has 16 divisors (see below), whose sum is σ = 46961280. Its totient is φ = 17040960.

The previous prime is 30319987. The next prime is 30320009. The reversal of 30319989 is 98991303.

It is a happy number.

It is not a de Polignac number, because 30319989 - 2¹ = 30319987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30319989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30319987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10554 + ... + 13115.

It is an arithmetic number, because the mean of its divisors is an integer number (2935080).

Almost surely, 2^30319989 is an apocalyptic number.

It is an amenable number.

30319989 is a deficient number, since it is larger than the sum of its proper divisors (16641291).

30319989 is a wasteful number, since it uses less digits than its factorization.

30319989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23740.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 30319989 is about 5506.3589603294. The cubic root of 30319989 is about 311.8241016237.

The spelling of 30319989 in words is "thirty million, three hundred nineteen thousand, nine hundred eighty-nine".