243097329 has 8 divisors (see below), whose sum is σ = 324229312. Its totient is φ = 162015120.

The previous prime is 243097313. The next prime is 243097339. The reversal of 243097329 is 923790342.

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

It is not a de Polignac number, because 243097329 - 2⁴ = 243097313 is a prime.

It is a super-2 number, since 2×243097329² = 118192622733868482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243097339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1044 + ... + 22074.

It is an arithmetic number, because the mean of its divisors is an integer number (40528664).

Almost surely, 2^243097329 is an apocalyptic number.

It is an amenable number.

243097329 is a deficient number, since it is larger than the sum of its proper divisors (81131983).

243097329 is a wasteful number, since it uses less digits than its factorization.

243097329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24887.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 243097329 is about 15591.5787847158. The cubic root of 243097329 is about 624.1084495719.

The spelling of 243097329 in words is "two hundred forty-three million, ninety-seven thousand, three hundred twenty-nine".