213340144 has 20 divisors (see below), whose sum is σ = 422142624. Its totient is φ = 104400128.

The previous prime is 213340121. The next prime is 213340147. The reversal of 213340144 is 441043312.

213340144 is nontrivially palindromic in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213340147) 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 3 ways as a sum of consecutive naturals, for example, 141097 + ... + 142600.

Almost surely, 2^213340144 is an apocalyptic number.

It is an amenable number.

213340144 is a deficient number, since it is larger than the sum of its proper divisors (208802480).

213340144 is a wasteful number, since it uses less digits than its factorization.

213340144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283752 (or 283746 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 213340144 is about 14606.1680121790. The cubic root of 213340144 is about 597.5269914220.

Adding to 213340144 its reverse (441043312), we get a palindrome (654383456).

The spelling of 213340144 in words is "two hundred thirteen million, three hundred forty thousand, one hundred forty-four".