20323730043 has 12 divisors (see below), whose sum is σ = 29357983408. Its totient is φ = 13548468240.

The previous prime is 20323730041. The next prime is 20323730047. The reversal of 20323730043 is 34003732302.

It is a happy number.

It is not a de Polignac number, because 20323730043 - 2¹ = 20323730041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20323729989 and 20323730016.

It is not an unprimeable number, because it can be changed into a prime (20323730041) 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 11 ways as a sum of consecutive naturals, for example, 184653 + ... + 273393.

Almost surely, 2^20323730043 is an apocalyptic number.

20323730043 is a deficient number, since it is larger than the sum of its proper divisors (9034253365).

20323730043 is a wasteful number, since it uses less digits than its factorization.

20323730043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114194 (or 114191 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 27.

The spelling of 20323730043 in words is "twenty billion, three hundred twenty-three million, seven hundred thirty thousand, forty-three".