213023020213 has 4 divisors (see below), whose sum is σ = 213184524960. Its totient is φ = 212861515468.

The previous prime is 213023020159. The next prime is 213023020313. The reversal of 213023020213 is 312020320312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213023020213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213023020313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80750395 + ... + 80753032.

It is an arithmetic number, because the mean of its divisors is an integer number (53296131240).

Almost surely, 2^213023020213 is an apocalyptic number.

It is an amenable number.

213023020213 is a deficient number, since it is larger than the sum of its proper divisors (161504747).

213023020213 is a wasteful number, since it uses less digits than its factorization.

213023020213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161504746.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 213023020213 its reverse (312020320312), we get a palindrome (525043340525).

The spelling of 213023020213 in words is "two hundred thirteen billion, twenty-three million, twenty thousand, two hundred thirteen".