43143223423 has 2 divisors, whose sum is σ = 43143223424. Its totient is φ = 43143223422.

The previous prime is 43143223397. The next prime is 43143223477. The reversal of 43143223423 is 32432234134.

It is a happy number.

43143223423 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 43143223423 - 2²¹ = 43141126271 is a prime.

It is a super-2 number, since 2×43143223423² (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 (43143223483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21571611711 + 21571611712.

It is an arithmetic number, because the mean of its divisors is an integer number (21571611712).

Almost surely, 2^43143223423 is an apocalyptic number.

43143223423 is a deficient number, since it is larger than the sum of its proper divisors (1).

43143223423 is an equidigital number, since it uses as much as digits as its factorization.

43143223423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 31.

Adding to 43143223423 its reverse (32432234134), we get a palindrome (75575457557).

The spelling of 43143223423 in words is "forty-three billion, one hundred forty-three million, two hundred twenty-three thousand, four hundred twenty-three".