243532641 has 16 divisors (see below), whose sum is σ = 354751488. Its totient is φ = 147378000.

The previous prime is 243532609. The next prime is 243532643. The reversal of 243532641 is 146235342.

It is not a de Polignac number, because 243532641 - 2⁵ = 243532609 is a prime.

It is a super-3 number, since 3×243532641³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243532599 and 243532608.

It is not an unprimeable number, because it can be changed into a prime (243532643) 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, 18916 + ... + 29066.

It is an arithmetic number, because the mean of its divisors is an integer number (22171968).

Almost surely, 2^243532641 is an apocalyptic number.

It is an amenable number.

243532641 is a deficient number, since it is larger than the sum of its proper divisors (111218847).

243532641 is a wasteful number, since it uses less digits than its factorization.

243532641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10892.

The product of its digits is 17280, while the sum is 30.

The square root of 243532641 is about 15605.5323843821. The cubic root of 243532641 is about 624.4807557227.

Adding to 243532641 its reverse (146235342), we get a palindrome (389767983).

The spelling of 243532641 in words is "two hundred forty-three million, five hundred thirty-two thousand, six hundred forty-one".