243353241 has 10 divisors (see below), whose sum is σ = 363527802. Its totient is φ = 162235440.

The previous prime is 243353183. The next prime is 243353267. The reversal of 243353241 is 142353342.

243353241 is a `hidden beast` number, since 2 + 4 + 335 + 324 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 174794841 + 68558400 = 13221^2 + 8280^2 .

It is not a de Polignac number, because 243353241 - 2¹¹ = 243351193 is a prime.

It is a super-3 number, since 3×243353241³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (243353741) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1502100 + ... + 1502261.

Almost surely, 2^243353241 is an apocalyptic number.

It is an amenable number.

243353241 is a deficient number, since it is larger than the sum of its proper divisors (120174561).

243353241 is an equidigital number, since it uses as much as digits as its factorization.

243353241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004373 (or 3004364 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 243353241 is about 15599.7833638804. The cubic root of 243353241 is about 624.3273753681.

The spelling of 243353241 in words is "two hundred forty-three million, three hundred fifty-three thousand, two hundred forty-one".