20023318213 has 2 divisors, whose sum is σ = 20023318214. Its totient is φ = 20023318212.

The previous prime is 20023318201. The next prime is 20023318229. The reversal of 20023318213 is 31281332002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16800825924 + 3222492289 = 129618^2 + 56767^2 .

It is a cyclic number.

It is not a de Polignac number, because 20023318213 - 2⁵ = 20023318181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20023318243) 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 as a sum of consecutive naturals, namely, 10011659106 + 10011659107.

It is an arithmetic number, because the mean of its divisors is an integer number (10011659107).

Almost surely, 2^20023318213 is an apocalyptic number.

It is an amenable number.

20023318213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20023318213 is an equidigital number, since it uses as much as digits as its factorization.

20023318213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 20023318213 in words is "twenty billion, twenty-three million, three hundred eighteen thousand, two hundred thirteen".