243356 has 12 divisors (see below), whose sum is σ = 431592. Its totient is φ = 120048.

The previous prime is 243343. The next prime is 243367. The reversal of 243356 is 653342.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 35 + ... + 698.

It is an arithmetic number, because the mean of its divisors is an integer number (35966).

2²⁴³³⁵⁶ is an apocalyptic number.

It is an amenable number.

243356 is a deficient number, since it is larger than the sum of its proper divisors (188236).

243356 is a wasteful number, since it uses less digits than its factorization.

243356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 818 counting only the distinct ones).

The product of its digits is 2160, while the sum is 23.

The square root of 243356 is about 493.3112607675. The cubic root of 243356 is about 62.4329734782.

Adding to 243356 its reverse (653342), we get a palindrome (896698).

The spelling of 243356 in words is "two hundred forty-three thousand, three hundred fifty-six".