243302241 has 32 divisors (see below), whose sum is σ = 409022208. Its totient is φ = 125199360.

The previous prime is 243302231. The next prime is 243302251. The reversal of 243302241 is 142203342.

243302241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (243302231) and next prime (243302251).

It is not a de Polignac number, because 243302241 - 2⁶ = 243302177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (243302231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 325 + ... + 22061.

It is an arithmetic number, because the mean of its divisors is an integer number (12781944).

Almost surely, 2^243302241 is an apocalyptic number.

243302241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

243302241 is a deficient number, since it is larger than the sum of its proper divisors (165719967).

243302241 is a wasteful number, since it uses less digits than its factorization.

243302241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21801.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 243302241 is about 15598.1486401432. The cubic root of 243302241 is about 624.2837584972.

Adding to 243302241 its reverse (142203342), we get a palindrome (385505583).

The spelling of 243302241 in words is "two hundred forty-three million, three hundred two thousand, two hundred forty-one".