243287369 has 16 divisors (see below), whose sum is σ = 268654848. Its totient is φ = 218909952.

The previous prime is 243287329. The next prime is 243287371. The reversal of 243287369 is 963782342.

It is a cyclic number.

It is not a de Polignac number, because 243287369 - 2¹⁶ = 243221833 is a prime.

It is a super-2 number, since 2×243287369² = 118377487829884322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243287309) 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, 186929 + ... + 188225.

It is an arithmetic number, because the mean of its divisors is an integer number (16790928).

Almost surely, 2^243287369 is an apocalyptic number.

It is an amenable number.

243287369 is a deficient number, since it is larger than the sum of its proper divisors (25367479).

243287369 is a wasteful number, since it uses less digits than its factorization.

243287369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664.

The product of its digits is 435456, while the sum is 44.

The square root of 243287369 is about 15597.6719096152. The cubic root of 243287369 is about 624.2710383277.

The spelling of 243287369 in words is "two hundred forty-three million, two hundred eighty-seven thousand, three hundred sixty-nine".