243434165 has 16 divisors (see below), whose sum is σ = 324742656. Its totient is φ = 173966400.

The previous prime is 243434161. The next prime is 243434201. The reversal of 243434165 is 561434342.

It is not a de Polignac number, because 243434165 - 2² = 243434161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243434161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58391 + ... + 62420.

It is an arithmetic number, because the mean of its divisors is an integer number (20296416).

Almost surely, 2^243434165 is an apocalyptic number.

It is an amenable number.

243434165 is a deficient number, since it is larger than the sum of its proper divisors (81308491).

243434165 is a wasteful number, since it uses less digits than its factorization.

243434165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120860.

The product of its digits is 34560, while the sum is 32.

The square root of 243434165 is about 15602.3769022543. The cubic root of 243434165 is about 624.3965717197.

The spelling of 243434165 in words is "two hundred forty-three million, four hundred thirty-four thousand, one hundred sixty-five".