30855309 has 8 divisors (see below), whose sum is σ = 41754720. Its totient is φ = 20263056.

The previous prime is 30855301. The next prime is 30855311. The reversal of 30855309 is 90355803.

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

It is not a de Polignac number, because 30855309 - 2³ = 30855301 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30855309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30855301) 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 7 ways as a sum of consecutive naturals, for example, 76554 + ... + 76955.

It is an arithmetic number, because the mean of its divisors is an integer number (5219340).

Almost surely, 2^30855309 is an apocalyptic number.

It is an amenable number.

30855309 is a deficient number, since it is larger than the sum of its proper divisors (10899411).

30855309 is a wasteful number, since it uses less digits than its factorization.

30855309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153579.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 30855309 is about 5554.7555301741. The cubic root of 30855309 is about 313.6485614626.

The spelling of 30855309 in words is "thirty million, eight hundred fifty-five thousand, three hundred nine".