243551343 has 16 divisors (see below), whose sum is σ = 371356160. Its totient is φ = 139085856.

The previous prime is 243551327. The next prime is 243551359. The reversal of 243551343 is 343155342.

243551343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (243551327) and next prime (243551359).

It is not a de Polignac number, because 243551343 - 2⁴ = 243551327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243551343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243551323) 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, 48798 + ... + 53556.

It is an arithmetic number, because the mean of its divisors is an integer number (23209760).

Almost surely, 2^243551343 is an apocalyptic number.

243551343 is a deficient number, since it is larger than the sum of its proper divisors (127804817).

243551343 is a wasteful number, since it uses less digits than its factorization.

243551343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7206.

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

The square root of 243551343 is about 15606.1315834514. The cubic root of 243551343 is about 624.4967409039.

The spelling of 243551343 in words is "two hundred forty-three million, five hundred fifty-one thousand, three hundred forty-three".