213106 has 8 divisors (see below), whose sum is σ = 322560. Its totient is φ = 105588.

The previous prime is 213097. The next prime is 213119. The reversal of 213106 is 601312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 15.

It is an unprimeable number.

213106 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166 + ... + 673.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2²¹³¹⁰⁶ is an apocalyptic number.

213106 is a deficient number, since it is larger than the sum of its proper divisors (109454).

213106 is a wasteful number, since it uses less digits than its factorization.

213106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 213106 is about 461.6340542031. The cubic root of 213106 is about 59.7308313131.

Adding to 213106 its reverse (601312), we get a palindrome (814418).

It can be divided in two parts, 21310 and 6, that added together give a square (21316 = 146²).

The spelling of 213106 in words is "two hundred thirteen thousand, one hundred six".