20431132443123 has 8 divisors (see below), whose sum is σ = 27491432034000. Its totient is φ = 13495793907168.

The previous prime is 20431132443091. The next prime is 20431132443133. The reversal of 20431132443123 is 32134423113402.

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

It is not a de Polignac number, because 20431132443123 - 2⁵ = 20431132443091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20431132443133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31240263348 + ... + 31240264001.

It is an arithmetic number, because the mean of its divisors is an integer number (3436429004250).

Almost surely, 2^{20431132443123} is an apocalyptic number.

20431132443123 is a deficient number, since it is larger than the sum of its proper divisors (7060299590877).

20431132443123 is a wasteful number, since it uses less digits than its factorization.

20431132443123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62480527461.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 20431132443123 its reverse (32134423113402), we get a palindrome (52565555556525).

The spelling of 20431132443123 in words is "twenty trillion, four hundred thirty-one billion, one hundred thirty-two million, four hundred forty-three thousand, one hundred twenty-three".