43403411243 has 2 divisors, whose sum is σ = 43403411244. Its totient is φ = 43403411242.

The previous prime is 43403411173. The next prime is 43403411257. The reversal of 43403411243 is 34211430434.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43403411243 - 2⁸ = 43403410987 is a prime.

It is a super-2 number, since 2×43403411243² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43403411143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21701705621 + 21701705622.

It is an arithmetic number, because the mean of its divisors is an integer number (21701705622).

Almost surely, 2^43403411243 is an apocalyptic number.

43403411243 is a deficient number, since it is larger than the sum of its proper divisors (1).

43403411243 is an equidigital number, since it uses as much as digits as its factorization.

43403411243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 43403411243 its reverse (34211430434), we get a palindrome (77614841677).

The spelling of 43403411243 in words is "forty-three billion, four hundred three million, four hundred eleven thousand, two hundred forty-three".