213534165 has 16 divisors (see below), whose sum is σ = 367936128. Its totient is φ = 105124416.

The previous prime is 213534149. The next prime is 213534187. The reversal of 213534165 is 561435312.

It is not a de Polignac number, because 213534165 - 2⁴ = 213534149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547329 + ... + 547718.

It is an arithmetic number, because the mean of its divisors is an integer number (22996008).

Almost surely, 2^213534165 is an apocalyptic number.

It is an amenable number.

213534165 is a deficient number, since it is larger than the sum of its proper divisors (154401963).

213534165 is a wasteful number, since it uses less digits than its factorization.

213534165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095068.

The product of its digits is 10800, while the sum is 30.

The square root of 213534165 is about 14612.8082516674. The cubic root of 213534165 is about 597.7080757305.

Adding to 213534165 its reverse (561435312), we get a palindrome (774969477).

The spelling of 213534165 in words is "two hundred thirteen million, five hundred thirty-four thousand, one hundred sixty-five".