243410421303431 has 2 divisors, whose sum is σ = 243410421303432. Its totient is φ = 243410421303430.

The previous prime is 243410421303383. The next prime is 243410421303451. The reversal of 243410421303431 is 134303124014342.

243410421303431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243410421303431 - 2¹⁸ = 243410421041287 is a prime.

It is a super-2 number, since 2×243410421303431² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 243410421303391 and 243410421303400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243410421303451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121705210651715 + 121705210651716.

It is an arithmetic number, because the mean of its divisors is an integer number (121705210651716).

Almost surely, 2^{243410421303431} is an apocalyptic number.

243410421303431 is a deficient number, since it is larger than the sum of its proper divisors (1).

243410421303431 is an equidigital number, since it uses as much as digits as its factorization.

243410421303431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 243410421303431 its reverse (134303124014342), we get a palindrome (377713545317773).

The spelling of 243410421303431 in words is "two hundred forty-three trillion, four hundred ten billion, four hundred twenty-one million, three hundred three thousand, four hundred thirty-one".