43400043023 has 8 divisors (see below), whose sum is σ = 43830154368. Its totient is φ = 42970100184.

The previous prime is 43400043017. The next prime is 43400043041. The reversal of 43400043023 is 32034000434.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43400043023 - 2²² = 43395848719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43400043023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43400043013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511340 + ... + 590142.

It is an arithmetic number, because the mean of its divisors is an integer number (5478769296).

Almost surely, 2^43400043023 is an apocalyptic number.

43400043023 is a deficient number, since it is larger than the sum of its proper divisors (430111345).

43400043023 is a wasteful number, since it uses less digits than its factorization.

43400043023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84253.

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 43400043023 its reverse (32034000434), we get a palindrome (75434043457).

The spelling of 43400043023 in words is "forty-three billion, four hundred million, forty-three thousand, twenty-three".