243031231031 has 2 divisors, whose sum is σ = 243031231032. Its totient is φ = 243031231030.

The previous prime is 243031231019. The next prime is 243031231057. The reversal of 243031231031 is 130132130342.

243031231031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243031231031 - 2³⁴ = 225851361847 is a prime.

It is a super-2 number, since 2×243031231031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243031230988 and 243031231006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243031231231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121515615515 + 121515615516.

It is an arithmetic number, because the mean of its divisors is an integer number (121515615516).

Almost surely, 2^243031231031 is an apocalyptic number.

243031231031 is a deficient number, since it is larger than the sum of its proper divisors (1).

243031231031 is an equidigital number, since it uses as much as digits as its factorization.

243031231031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 243031231031 its reverse (130132130342), we get a palindrome (373163361373).

The spelling of 243031231031 in words is "two hundred forty-three billion, thirty-one million, two hundred thirty-one thousand, thirty-one".