43042434431 has 2 divisors, whose sum is σ = 43042434432. Its totient is φ = 43042434430.

The previous prime is 43042434373. The next prime is 43042434473. The reversal of 43042434431 is 13443424034.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43042434431 - 2¹⁴ = 43042418047 is a prime.

It is a super-2 number, since 2×43042434431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43042434131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21521217215 + 21521217216.

It is an arithmetic number, because the mean of its divisors is an integer number (21521217216).

Almost surely, 2^43042434431 is an apocalyptic number.

43042434431 is a deficient number, since it is larger than the sum of its proper divisors (1).

43042434431 is an equidigital number, since it uses as much as digits as its factorization.

43042434431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 43042434431 its reverse (13443424034), we get a palindrome (56485858465).

The spelling of 43042434431 in words is "forty-three billion, forty-two million, four hundred thirty-four thousand, four hundred thirty-one".