213020144 has 20 divisors (see below), whose sum is σ = 420515496. Its totient is φ = 104500032.

The previous prime is 213020069. The next prime is 213020161. The reversal of 213020144 is 441020312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124754 + ... + 126449.

Almost surely, 2^213020144 is an apocalyptic number.

It is an amenable number.

213020144 is a deficient number, since it is larger than the sum of its proper divisors (207495352).

213020144 is a wasteful number, since it uses less digits than its factorization.

213020144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251264 (or 251258 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 213020144 is about 14595.2096250790. The cubic root of 213020144 is about 597.2280879672.

Adding to 213020144 its reverse (441020312), we get a palindrome (654040456).

The spelling of 213020144 in words is "two hundred thirteen million, twenty thousand, one hundred forty-four".