243413231 has 2 divisors, whose sum is σ = 243413232. Its totient is φ = 243413230.

The previous prime is 243413221. The next prime is 243413257. The reversal of 243413231 is 132314342.

243413231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243413231 - 2⁶ = 243413167 is a prime.

It is a super-2 number, since 2×243413231² = 118500002051718722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243413197 and 243413206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243413221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121706615 + 121706616.

It is an arithmetic number, because the mean of its divisors is an integer number (121706616).

Almost surely, 2^243413231 is an apocalyptic number.

243413231 is a deficient number, since it is larger than the sum of its proper divisors (1).

243413231 is an equidigital number, since it uses as much as digits as its factorization.

243413231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 23.

The square root of 243413231 is about 15601.7060285085. The cubic root of 243413231 is about 624.3786729824.

Adding to 243413231 its reverse (132314342), we get a palindrome (375727573).

It can be divided in two parts, 24341 and 3231, that added together give a palindrome (27572).

The spelling of 243413231 in words is "two hundred forty-three million, four hundred thirteen thousand, two hundred thirty-one".