243195 has 16 divisors (see below), whose sum is σ = 402432. Its totient is φ = 125280.

The previous prime is 243167. The next prime is 243197. The reversal of 243195 is 591342.

It is not a de Polignac number, because 243195 - 2¹⁰ = 242171 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 243195.

It is not an unprimeable number, because it can be changed into a prime (243197) 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, 204 + ... + 726.

It is an arithmetic number, because the mean of its divisors is an integer number (25152).

2²⁴³¹⁹⁵ is an apocalyptic number.

243195 is a deficient number, since it is larger than the sum of its proper divisors (159237).

243195 is a wasteful number, since it uses less digits than its factorization.

243195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562.

The product of its digits is 1080, while the sum is 24.

The square root of 243195 is about 493.1480507921. The cubic root of 243195 is about 62.4192022593.

The spelling of 243195 in words is "two hundred forty-three thousand, one hundred ninety-five".