243436154231 has 2 divisors, whose sum is σ = 243436154232. Its totient is φ = 243436154230.

The previous prime is 243436154201. The next prime is 243436154233. The reversal of 243436154231 is 132451634342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243436154231 - 2⁶ = 243436154167 is a prime.

It is a super-2 number, since 2×243436154231² (a number of 24 digits) contains 22 as substring.

Together with 243436154233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243436154233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121718077115 + 121718077116.

It is an arithmetic number, because the mean of its divisors is an integer number (121718077116).

Almost surely, 2^243436154231 is an apocalyptic number.

243436154231 is a deficient number, since it is larger than the sum of its proper divisors (1).

243436154231 is an equidigital number, since it uses as much as digits as its factorization.

243436154231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 38.

Adding to 243436154231 its reverse (132451634342), we get a palindrome (375887788573).

The spelling of 243436154231 in words is "two hundred forty-three billion, four hundred thirty-six million, one hundred fifty-four thousand, two hundred thirty-one".