243143434277 has 2 divisors, whose sum is σ = 243143434278. Its totient is φ = 243143434276.

The previous prime is 243143434231. The next prime is 243143434309. The reversal of 243143434277 is 772434341342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234773197156 + 8370237121 = 484534^2 + 91489^2 .

It is a cyclic number.

It is not a de Polignac number, because 243143434277 - 2⁶ = 243143434213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243143434477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121571717138 + 121571717139.

It is an arithmetic number, because the mean of its divisors is an integer number (121571717139).

Almost surely, 2^243143434277 is an apocalyptic number.

It is an amenable number.

243143434277 is a deficient number, since it is larger than the sum of its proper divisors (1).

243143434277 is an equidigital number, since it uses as much as digits as its factorization.

243143434277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 44.

The spelling of 243143434277 in words is "two hundred forty-three billion, one hundred forty-three million, four hundred thirty-four thousand, two hundred seventy-seven".