43432001023 has 4 divisors (see below), whose sum is σ = 43432424560. Its totient is φ = 43431577488.

The previous prime is 43432000973. The next prime is 43432001069. The reversal of 43432001023 is 32010023434.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 43432001023 - 2⁹ = 43432000511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43432000985 and 43432001003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43432001323) 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, 49486 + ... + 298852.

It is an arithmetic number, because the mean of its divisors is an integer number (10858106140).

Almost surely, 2^43432001023 is an apocalyptic number.

43432001023 is a deficient number, since it is larger than the sum of its proper divisors (423537).

43432001023 is a wasteful number, since it uses less digits than its factorization.

43432001023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423536.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 43432001023 its reverse (32010023434), we get a palindrome (75442024457).

The spelling of 43432001023 in words is "forty-three billion, four hundred thirty-two million, one thousand, twenty-three".