243352231 has 2 divisors, whose sum is σ = 243352232. Its totient is φ = 243352230.

The previous prime is 243352223. The next prime is 243352237. The reversal of 243352231 is 132253342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243352231 - 2³ = 243352223 is a prime.

It is a super-2 number, since 2×243352231² = 118440616665354722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243352196 and 243352205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243352237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121676115 + 121676116.

It is an arithmetic number, because the mean of its divisors is an integer number (121676116).

Almost surely, 2^243352231 is an apocalyptic number.

243352231 is a deficient number, since it is larger than the sum of its proper divisors (1).

243352231 is an equidigital number, since it uses as much as digits as its factorization.

243352231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 25.

The square root of 243352231 is about 15599.7509916024. The cubic root of 243352231 is about 624.3265116422.

The spelling of 243352231 in words is "two hundred forty-three million, three hundred fifty-two thousand, two hundred thirty-one".