213286 has 8 divisors (see below), whose sum is σ = 326880. Its totient is φ = 104328.

The previous prime is 213281. The next prime is 213287. The reversal of 213286 is 682312.

213286 is nontrivially palindromic in base 6.

213286 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213281) by changing a digit.

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, 1041 + ... + 1228.

It is an arithmetic number, because the mean of its divisors is an integer number (40860).

2²¹³²⁸⁶ is an apocalyptic number.

213286 is a deficient number, since it is larger than the sum of its proper divisors (113594).

213286 is a wasteful number, since it uses less digits than its factorization.

213286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318.

The product of its digits is 576, while the sum is 22.

The square root of 213286 is about 461.8289726728. The cubic root of 213286 is about 59.7476437975.

Adding to 213286 its reverse (682312), we get a palindrome (895598).

It can be divided in two parts, 21 and 3286, that multiplied together give a triangular number (69006 = T₃₇₁).

The spelling of 213286 in words is "two hundred thirteen thousand, two hundred eighty-six".