213000020023 has 4 divisors (see below), whose sum is σ = 243428594320. Its totient is φ = 182571445728.

The previous prime is 213000019987. The next prime is 213000020053. The reversal of 213000020023 is 320020000312.

It is a happy number.

213000020023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-213000020023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213000019985 and 213000020012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213000020053) 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 3 ways as a sum of consecutive naturals, for example, 15214287138 + ... + 15214287151.

It is an arithmetic number, because the mean of its divisors is an integer number (60857148580).

Almost surely, 2^213000020023 is an apocalyptic number.

213000020023 is a deficient number, since it is larger than the sum of its proper divisors (30428574297).

213000020023 is an equidigital number, since it uses as much as digits as its factorization.

213000020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30428574296.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 213000020023 its reverse (320020000312), we get a palindrome (533020020335).

The spelling of 213000020023 in words is "two hundred thirteen billion, twenty thousand, twenty-three".