213318369 has 12 divisors (see below), whose sum is σ = 336138192. Its totient is φ = 129283800.

The previous prime is 213318319. The next prime is 213318401. The reversal of 213318369 is 963813312.

It is not a de Polignac number, because 213318369 - 2⁷ = 213318241 is a prime.

It is a super-2 number, since 2×213318369² = 91009453105640322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213318319) 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 11 ways as a sum of consecutive naturals, for example, 1077267 + ... + 1077464.

It is an arithmetic number, because the mean of its divisors is an integer number (28011516).

Almost surely, 2^213318369 is an apocalyptic number.

It is an amenable number.

213318369 is a deficient number, since it is larger than the sum of its proper divisors (122819823).

213318369 is a wasteful number, since it uses less digits than its factorization.

213318369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154748 (or 2154745 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 213318369 is about 14605.4225888880. The cubic root of 213318369 is about 597.5066614571.

It can be divided in two parts, 2133 and 18369, that added together give a palindrome (20502).

The spelling of 213318369 in words is "two hundred thirteen million, three hundred eighteen thousand, three hundred sixty-nine".