213206364 has 48 divisors (see below), whose sum is σ = 631724800. Its totient is φ = 60915888.

The previous prime is 213206351. The next prime is 213206369. The reversal of 213206364 is 463602312.

213206364 is a `hidden beast` number, since 2 + 1 + 3 + 20 + 636 + 4 = 666.

213206364 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213206369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140254 + ... + 141765.

Almost surely, 2^213206364 is an apocalyptic number.

It is an amenable number.

213206364 is an abundant number, since it is smaller than the sum of its proper divisors (418518436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213206364 is a wasteful number, since it uses less digits than its factorization.

213206364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282039 (or 282031 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 213206364 is about 14601.5877218883. The cubic root of 213206364 is about 597.4020674796.

Adding to 213206364 its reverse (463602312), we get a palindrome (676808676).

The spelling of 213206364 in words is "two hundred thirteen million, two hundred six thousand, three hundred sixty-four".