266230213 has 4 divisors (see below), whose sum is σ = 266263200. Its totient is φ = 266197228.

The previous prime is 266230193. The next prime is 266230229. The reversal of 266230213 is 312032662.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 312032662 = 2 ⋅156016331.

It is a cyclic number.

It is not a de Polignac number, because 266230213 - 2⁹ = 266229701 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 (266230253) 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, 4638 + ... + 23536.

It is an arithmetic number, because the mean of its divisors is an integer number (66565800).

Almost surely, 2^266230213 is an apocalyptic number.

It is an amenable number.

266230213 is a deficient number, since it is larger than the sum of its proper divisors (32987).

266230213 is a wasteful number, since it uses less digits than its factorization.

266230213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32986.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 266230213 is about 16316.5625362697. The cubic root of 266230213 is about 643.3082384966.

Adding to 266230213 its reverse (312032662), we get a palindrome (578262875).

The spelling of 266230213 in words is "two hundred sixty-six million, two hundred thirty thousand, two hundred thirteen".