243200231 has 4 divisors (see below), whose sum is σ = 248374752. Its totient is φ = 238025712.

The previous prime is 243200219. The next prime is 243200261. The reversal of 243200231 is 132002342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132002342 = 2 ⋅66001171.

It is a cyclic number.

It is not a de Polignac number, because 243200231 - 2²² = 239005927 is a prime.

It is a super-2 number, since 2×243200231² = 118292704716906722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243200261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2587190 + ... + 2587283.

It is an arithmetic number, because the mean of its divisors is an integer number (62093688).

Almost surely, 2^243200231 is an apocalyptic number.

243200231 is a deficient number, since it is larger than the sum of its proper divisors (5174521).

243200231 is an equidigital number, since it uses as much as digits as its factorization.

243200231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5174520.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 243200231 is about 15594.8783579738. The cubic root of 243200231 is about 624.1964979110.

Adding to 243200231 its reverse (132002342), we get a palindrome (375202573).

The spelling of 243200231 in words is "two hundred forty-three million, two hundred thousand, two hundred thirty-one".