243155343 has 32 divisors (see below), whose sum is σ = 344678400. Its totient is φ = 152240256.

The previous prime is 243155323. The next prime is 243155371. The reversal of 243155343 is 343551342.

It is not a de Polignac number, because 243155343 - 2⁶ = 243155279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243155343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243155323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 651705 + ... + 652077.

It is an arithmetic number, because the mean of its divisors is an integer number (10771200).

Almost surely, 2^243155343 is an apocalyptic number.

243155343 is a deficient number, since it is larger than the sum of its proper divisors (101523057).

243155343 is a wasteful number, since it uses less digits than its factorization.

243155343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591.

The product of its digits is 21600, while the sum is 30.

The square root of 243155343 is about 15593.4391011092. The cubic root of 243155343 is about 624.1580924426.

The spelling of 243155343 in words is "two hundred forty-three million, one hundred fifty-five thousand, three hundred forty-three".