243431201 has 8 divisors (see below), whose sum is σ = 263106984. Its totient is φ = 223891200.

The previous prime is 243431183. The next prime is 243431231. The reversal of 243431201 is 102134342.

It can be written as a sum of positive squares in 4 ways, for example, as 38254225 + 205176976 = 6185^2 + 14324^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243431201 - 2⁶ = 243431137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243431231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30200 + ... + 37401.

It is an arithmetic number, because the mean of its divisors is an integer number (32888373).

Almost surely, 2^243431201 is an apocalyptic number.

It is an amenable number.

243431201 is a deficient number, since it is larger than the sum of its proper divisors (19675783).

243431201 is a wasteful number, since it uses less digits than its factorization.

243431201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67891.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 243431201 is about 15602.2819164377. The cubic root of 243431201 is about 624.3940375384.

Adding to 243431201 its reverse (102134342), we get a palindrome (345565543).

The spelling of 243431201 in words is "two hundred forty-three million, four hundred thirty-one thousand, two hundred one".