30309207 has 8 divisors (see below), whose sum is σ = 40444800. Its totient is φ = 20189880.

The previous prime is 30309187. The next prime is 30309211. The reversal of 30309207 is 70290303.

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

It is not a de Polignac number, because 30309207 - 2⁶ = 30309143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30309247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1294 + ... + 7892.

It is an arithmetic number, because the mean of its divisors is an integer number (5055600).

Almost surely, 2^30309207 is an apocalyptic number.

30309207 is a deficient number, since it is larger than the sum of its proper divisors (10135593).

30309207 is a wasteful number, since it uses less digits than its factorization.

30309207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8133.

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 30309207 is about 5505.3798234091. The cubic root of 30309207 is about 311.7871349649.

The spelling of 30309207 in words is "thirty million, three hundred nine thousand, two hundred seven".