43011131423 has 4 divisors (see below), whose sum is σ = 46319680008. Its totient is φ = 39702582840.

The previous prime is 43011131417. The next prime is 43011131431. The reversal of 43011131423 is 32413111034.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32413111034 = 2 ⋅16206555517.

It is a cyclic number.

It is not a de Polignac number, because 43011131423 - 2²⁰ = 43010082847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43011031423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1654274273 + ... + 1654274298.

It is an arithmetic number, because the mean of its divisors is an integer number (11579920002).

Almost surely, 2^43011131423 is an apocalyptic number.

43011131423 is a deficient number, since it is larger than the sum of its proper divisors (3308548585).

43011131423 is a wasteful number, since it uses less digits than its factorization.

43011131423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3308548584.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 43011131423 its reverse (32413111034), we get a palindrome (75424242457).

The spelling of 43011131423 in words is "forty-three billion, eleven million, one hundred thirty-one thousand, four hundred twenty-three".