243123503341 has 2 divisors, whose sum is σ = 243123503342. Its totient is φ = 243123503340.

The previous prime is 243123503327. The next prime is 243123503393. The reversal of 243123503341 is 143305321342.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196133836900 + 46989666441 = 442870^2 + 216771^2 .

It is a cyclic number.

It is not a de Polignac number, because 243123503341 - 2²¹ = 243121406189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243123503141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121561751670 + 121561751671.

It is an arithmetic number, because the mean of its divisors is an integer number (121561751671).

Almost surely, 2^243123503341 is an apocalyptic number.

It is an amenable number.

243123503341 is a deficient number, since it is larger than the sum of its proper divisors (1).

243123503341 is an equidigital number, since it uses as much as digits as its factorization.

243123503341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 243123503341 its reverse (143305321342), we get a palindrome (386428824683).

The spelling of 243123503341 in words is "two hundred forty-three billion, one hundred twenty-three million, five hundred three thousand, three hundred forty-one".