243355443 has 16 divisors (see below), whose sum is σ = 339134880. Its totient is φ = 155022336.

The previous prime is 243355421. The next prime is 243355481. The reversal of 243355443 is 344553342.

It is a happy number.

243355443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243355443 - 2¹² = 243351347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243355403) 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, 5980 + ... + 22857.

It is an arithmetic number, because the mean of its divisors is an integer number (21195930).

Almost surely, 2^243355443 is an apocalyptic number.

243355443 is a deficient number, since it is larger than the sum of its proper divisors (95779437).

243355443 is a wasteful number, since it uses less digits than its factorization.

243355443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28966.

The product of its digits is 86400, while the sum is 33.

The square root of 243355443 is about 15599.8539416239. The cubic root of 243355443 is about 624.3292584534.

The spelling of 243355443 in words is "two hundred forty-three million, three hundred fifty-five thousand, four hundred forty-three".