43143431123 has 16 divisors (see below), whose sum is σ = 47931991296. Its totient is φ = 38574506880.

The previous prime is 43143431077. The next prime is 43143431129. The reversal of 43143431123 is 32113434134.

It is a happy number.

It is not a de Polignac number, because 43143431123 - 2⁶ = 43143431059 is a prime.

It is a super-2 number, since 2×43143431123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43143431129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93848 + ... + 308373.

It is an arithmetic number, because the mean of its divisors is an integer number (2995749456).

Almost surely, 2^43143431123 is an apocalyptic number.

43143431123 is a deficient number, since it is larger than the sum of its proper divisors (4788560173).

43143431123 is a wasteful number, since it uses less digits than its factorization.

43143431123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402494.

The product of its digits is 10368, while the sum is 29.

Adding to 43143431123 its reverse (32113434134), we get a palindrome (75256865257).

The spelling of 43143431123 in words is "forty-three billion, one hundred forty-three million, four hundred thirty-one thousand, one hundred twenty-three".