30000309 has 4 divisors (see below), whose sum is σ = 40000416. Its totient is φ = 20000204.

The previous prime is 30000307. The next prime is 30000317. The reversal of 30000309 is 90300003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30000309 - 2¹ = 30000307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000301) 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, 5000049 + ... + 5000054.

It is an arithmetic number, because the mean of its divisors is an integer number (10000104).

Almost surely, 2^30000309 is an apocalyptic number.

It is an amenable number.

30000309 is a deficient number, since it is larger than the sum of its proper divisors (10000107).

30000309 is a wasteful number, since it uses less digits than its factorization.

30000309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000106.

The product of its (nonzero) digits is 81, while the sum is 15.

The square root of 30000309 is about 5477.2537826907. The cubic root of 30000309 is about 310.7243174082.

The spelling of 30000309 in words is "thirty million, three hundred nine", and thus it is an aban number.