43023253523 has 4 divisors (see below), whose sum is σ = 45554033160. Its totient is φ = 40492473888.

The previous prime is 43023253519. The next prime is 43023253549. The reversal of 43023253523 is 32535232034.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43023253523 - 2² = 43023253519 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 43023253523.

It is not an unprimeable number, because it can be changed into a prime (43023253513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265389793 + ... + 1265389826.

It is an arithmetic number, because the mean of its divisors is an integer number (11388508290).

Almost surely, 2^43023253523 is an apocalyptic number.

43023253523 is a deficient number, since it is larger than the sum of its proper divisors (2530779637).

43023253523 is a wasteful number, since it uses less digits than its factorization.

43023253523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530779636.

The product of its (nonzero) digits is 64800, while the sum is 32.

Adding to 43023253523 its reverse (32535232034), we get a palindrome (75558485557).

The spelling of 43023253523 in words is "forty-three billion, twenty-three million, two hundred fifty-three thousand, five hundred twenty-three".