43531402323 has 4 divisors (see below), whose sum is σ = 58041869768. Its totient is φ = 29020934880.

The previous prime is 43531402309. The next prime is 43531402339. The reversal of 43531402323 is 32320413534.

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

It is not a de Polignac number, because 43531402323 - 2⁹ = 43531401811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43531402373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7255233718 + ... + 7255233723.

It is an arithmetic number, because the mean of its divisors is an integer number (14510467442).

Almost surely, 2^43531402323 is an apocalyptic number.

43531402323 is a deficient number, since it is larger than the sum of its proper divisors (14510467445).

43531402323 is a wasteful number, since it uses less digits than its factorization.

43531402323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14510467444.

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 43531402323 its reverse (32320413534), we get a palindrome (75851815857).

The spelling of 43531402323 in words is "forty-three billion, five hundred thirty-one million, four hundred two thousand, three hundred twenty-three".