243343013131 has 2 divisors, whose sum is σ = 243343013132. Its totient is φ = 243343013130.

The previous prime is 243343013093. The next prime is 243343013153. The reversal of 243343013131 is 131310343342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243343013131 - 2²³ = 243334624523 is a prime.

It is a super-2 number, since 2×243343013131² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243343013131.

It is not a weakly prime, because it can be changed into another prime (243343013531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121671506565 + 121671506566.

It is an arithmetic number, because the mean of its divisors is an integer number (121671506566).

Almost surely, 2^243343013131 is an apocalyptic number.

243343013131 is a deficient number, since it is larger than the sum of its proper divisors (1).

243343013131 is an equidigital number, since it uses as much as digits as its factorization.

243343013131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 243343013131 its reverse (131310343342), we get a palindrome (374653356473).

The spelling of 243343013131 in words is "two hundred forty-three billion, three hundred forty-three million, thirteen thousand, one hundred thirty-one".