20340223443 has 32 divisors (see below), whose sum is σ = 31483468800. Its totient is φ = 12954224448.

The previous prime is 20340223441. The next prime is 20340223459. The reversal of 20340223443 is 34432204302.

20340223443 is a `hidden beast` number, since 20 + 3 + 402 + 234 + 4 + 3 = 666.

It is not a de Polignac number, because 20340223443 - 2¹ = 20340223441 is a prime.

It is a super-2 number, since 2×20340223443² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20340223441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 482146 + ... + 522632.

It is an arithmetic number, because the mean of its divisors is an integer number (983858400).

Almost surely, 2^20340223443 is an apocalyptic number.

20340223443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20340223443 is a deficient number, since it is larger than the sum of its proper divisors (11143245357).

20340223443 is a wasteful number, since it uses less digits than its factorization.

20340223443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41328 (or 41322 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 20340223443 its reverse (34432204302), we get a palindrome (54772427745).

The spelling of 20340223443 in words is "twenty billion, three hundred forty million, two hundred twenty-three thousand, four hundred forty-three".