243234424243 has 2 divisors, whose sum is σ = 243234424244. Its totient is φ = 243234424242.

The previous prime is 243234424229. The next prime is 243234424259. The reversal of 243234424243 is 342424432342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243234424243 - 2¹⁷ = 243234293171 is a prime.

It is a super-2 number, since 2×243234424243² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243264424243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121617212121 + 121617212122.

It is an arithmetic number, because the mean of its divisors is an integer number (121617212122).

Almost surely, 2^243234424243 is an apocalyptic number.

243234424243 is a deficient number, since it is larger than the sum of its proper divisors (1).

243234424243 is an equidigital number, since it uses as much as digits as its factorization.

243234424243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 442368, while the sum is 37.

Adding to 243234424243 its reverse (342424432342), we get a palindrome (585658856585).

The spelling of 243234424243 in words is "two hundred forty-three billion, two hundred thirty-four million, four hundred twenty-four thousand, two hundred forty-three".