243275 has 12 divisors (see below), whose sum is σ = 310992. Its totient is φ = 188640.

The previous prime is 243263. The next prime is 243301. The reversal of 243275 is 572342.

It is not a de Polignac number, because 243275 - 2⁴ = 243259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243275.

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 11 ways as a sum of consecutive naturals, for example, 794 + ... + 1056.

It is an arithmetic number, because the mean of its divisors is an integer number (25916).

2²⁴³²⁷⁵ is an apocalyptic number.

243275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

243275 is a deficient number, since it is larger than the sum of its proper divisors (67717).

243275 is a wasteful number, since it uses less digits than its factorization.

243275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 305 counting only the distinct ones).

The product of its digits is 1680, while the sum is 23.

The square root of 243275 is about 493.2291556670. The cubic root of 243275 is about 62.4260458604.

The spelling of 243275 in words is "two hundred forty-three thousand, two hundred seventy-five".