20043332431 has 4 divisors (see below), whose sum is σ = 20049845200. Its totient is φ = 20036819664.

The previous prime is 20043332417. The next prime is 20043332453. The reversal of 20043332431 is 13423334002.

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 20043332431 - 2¹³ = 20043324239 is a prime.

It is a super-2 number, since 2×20043332431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20043332396 and 20043332405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043332411) 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, 3251766 + ... + 3257923.

It is an arithmetic number, because the mean of its divisors is an integer number (5012461300).

Almost surely, 2^20043332431 is an apocalyptic number.

20043332431 is a deficient number, since it is larger than the sum of its proper divisors (6512769).

20043332431 is an equidigital number, since it uses as much as digits as its factorization.

20043332431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512768.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 20043332431 its reverse (13423334002), we get a palindrome (33466666433).

The spelling of 20043332431 in words is "twenty billion, forty-three million, three hundred thirty-two thousand, four hundred thirty-one".