20202320023 has 4 divisors (see below), whose sum is σ = 20205918448. Its totient is φ = 20198721600.

The previous prime is 20202319999. The next prime is 20202320137. The reversal of 20202320023 is 32002320202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20202320023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20202319979 and 20202320006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202321023) 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, 1790778 + ... + 1802023.

It is an arithmetic number, because the mean of its divisors is an integer number (5051479612).

Almost surely, 2^20202320023 is an apocalyptic number.

20202320023 is a deficient number, since it is larger than the sum of its proper divisors (3598425).

20202320023 is an equidigital number, since it uses as much as digits as its factorization.

20202320023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3598424.

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 20202320023 its reverse (32002320202), we get a palindrome (52204640225).

The spelling of 20202320023 in words is "twenty billion, two hundred two million, three hundred twenty thousand, twenty-three".