210324009 has 16 divisors (see below), whose sum is σ = 321152000. Its totient is φ = 119938320.

The previous prime is 210323989. The next prime is 210324019. The reversal of 210324009 is 900423012.

It is not a de Polignac number, because 210324009 - 2⁹ = 210323497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210324019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444 + ... + 20514.

It is an arithmetic number, because the mean of its divisors is an integer number (20072000).

Almost surely, 2^210324009 is an apocalyptic number.

It is an amenable number.

210324009 is a deficient number, since it is larger than the sum of its proper divisors (110827991).

210324009 is a wasteful number, since it uses less digits than its factorization.

210324009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20580.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 210324009 is about 14502.5518099402. The cubic root of 210324009 is about 594.6977340976.

The spelling of 210324009 in words is "two hundred ten million, three hundred twenty-four thousand, nine".