243434673 has 16 divisors (see below), whose sum is σ = 362482560. Its totient is φ = 161462448.

The previous prime is 243434663. The next prime is 243434677. The reversal of 243434673 is 376434342.

243434673 is a `hidden beast` number, since 243 + 4 + 346 + 73 = 666.

It is not a de Polignac number, because 243434673 - 2⁹ = 243434161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243434677) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17565 + ... + 28202.

It is an arithmetic number, because the mean of its divisors is an integer number (22655160).

Almost surely, 2^243434673 is an apocalyptic number.

It is an amenable number.

243434673 is a deficient number, since it is larger than the sum of its proper divisors (119047887).

243434673 is a wasteful number, since it uses less digits than its factorization.

243434673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45973 (or 45967 counting only the distinct ones).

The product of its digits is 145152, while the sum is 36.

The square root of 243434673 is about 15602.3931818167. The cubic root of 243434673 is about 624.3970060510.

The spelling of 243434673 in words is "two hundred forty-three million, four hundred thirty-four thousand, six hundred seventy-three".