20040303443 has 8 divisors (see below), whose sum is σ = 22141716768. Its totient is φ = 18041398144.

The previous prime is 20040303421. The next prime is 20040303457. The reversal of 20040303443 is 34430304002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20040303443 - 2⁶ = 20040303379 is a prime.

It is a super-2 number, since 2×20040303443² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20040303403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25626596 + ... + 25627377.

It is an arithmetic number, because the mean of its divisors is an integer number (2767714596).

Almost surely, 2^20040303443 is an apocalyptic number.

20040303443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20040303443 is a deficient number, since it is larger than the sum of its proper divisors (2101413325).

20040303443 is a wasteful number, since it uses less digits than its factorization.

20040303443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51254013.

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 20040303443 its reverse (34430304002), we get a palindrome (54470607445).

The spelling of 20040303443 in words is "twenty billion, forty million, three hundred three thousand, four hundred forty-three".