43242312523 has 4 divisors (see below), whose sum is σ = 43243055928. Its totient is φ = 43241569120.

The previous prime is 43242312481. The next prime is 43242312613. The reversal of 43242312523 is 32521324234.

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 43242312523 - 2⁹ = 43242312011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43242310523) 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, 276286 + ... + 403507.

It is an arithmetic number, because the mean of its divisors is an integer number (10810763982).

Almost surely, 2^43242312523 is an apocalyptic number.

43242312523 is a deficient number, since it is larger than the sum of its proper divisors (743405).

43242312523 is an equidigital number, since it uses as much as digits as its factorization.

43242312523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743404.

The product of its digits is 34560, while the sum is 31.

Adding to 43242312523 its reverse (32521324234), we get a palindrome (75763636757).

The spelling of 43242312523 in words is "forty-three billion, two hundred forty-two million, three hundred twelve thousand, five hundred twenty-three".