213533683 has 4 divisors (see below), whose sum is σ = 232945848. Its totient is φ = 194121520.

The previous prime is 213533681. The next prime is 213533689. The reversal of 213533683 is 386335312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213533683 - 2¹ = 213533681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213533681) 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, 9706066 + ... + 9706087.

It is an arithmetic number, because the mean of its divisors is an integer number (58236462).

Almost surely, 2^213533683 is an apocalyptic number.

213533683 is a deficient number, since it is larger than the sum of its proper divisors (19412165).

213533683 is a wasteful number, since it uses less digits than its factorization.

213533683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19412164.

The product of its digits is 38880, while the sum is 34.

The square root of 213533683 is about 14612.7917592772. The cubic root of 213533683 is about 597.7076260046.

Adding to 213533683 its reverse (386335312), we get a palindrome (599868995).

The spelling of 213533683 in words is "two hundred thirteen million, five hundred thirty-three thousand, six hundred eighty-three".