243034589 has 4 divisors (see below), whose sum is σ = 277753824. Its totient is φ = 208315356.

The previous prime is 243034549. The next prime is 243034591. The reversal of 243034589 is 985430342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243034589 - 2²⁴ = 226257373 is a prime.

It is a super-2 number, since 2×243034589² = 118131622900797842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243034549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17359607 + ... + 17359620.

It is an arithmetic number, because the mean of its divisors is an integer number (69438456).

Almost surely, 2^243034589 is an apocalyptic number.

It is an amenable number.

243034589 is a deficient number, since it is larger than the sum of its proper divisors (34719235).

243034589 is an equidigital number, since it uses as much as digits as its factorization.

243034589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34719234.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 243034589 is about 15589.5666713350. The cubic root of 243034589 is about 624.0547537493.

The spelling of 243034589 in words is "two hundred forty-three million, thirty-four thousand, five hundred eighty-nine".