20012303023 has 4 divisors (see below), whose sum is σ = 20012626800. Its totient is φ = 20011979248.

The previous prime is 20012303011. The next prime is 20012303027. The reversal of 20012303023 is 32030321002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32030321002 = 2 ⋅16015160501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20012303023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20012302988 and 20012303006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012303027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37123 + ... + 203476.

It is an arithmetic number, because the mean of its divisors is an integer number (5003156700).

Almost surely, 2^20012303023 is an apocalyptic number.

20012303023 is a deficient number, since it is larger than the sum of its proper divisors (323777).

20012303023 is an equidigital number, since it uses as much as digits as its factorization.

20012303023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323776.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20012303023 its reverse (32030321002), we get a palindrome (52042624025).

The spelling of 20012303023 in words is "twenty billion, twelve million, three hundred three thousand, twenty-three".