243310223129 has 2 divisors, whose sum is σ = 243310223130. Its totient is φ = 243310223128.

The previous prime is 243310223113. The next prime is 243310223147. The reversal of 243310223129 is 921322013342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140171616025 + 103138607104 = 374395^2 + 321152^2 .

It is a cyclic number.

It is not a de Polignac number, because 243310223129 - 2⁴ = 243310223113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243310223095 and 243310223104.

It is not a weakly prime, because it can be changed into another prime (243310223729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121655111564 + 121655111565.

It is an arithmetic number, because the mean of its divisors is an integer number (121655111565).

Almost surely, 2^243310223129 is an apocalyptic number.

It is an amenable number.

243310223129 is a deficient number, since it is larger than the sum of its proper divisors (1).

243310223129 is an equidigital number, since it uses as much as digits as its factorization.

243310223129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 243310223129 in words is "two hundred forty-three billion, three hundred ten million, two hundred twenty-three thousand, one hundred twenty-nine".