213284 has 12 divisors (see below), whose sum is σ = 379008. Its totient is φ = 105000.

The previous prime is 213281. The next prime is 213287. The reversal of 213284 is 482312.

213284 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (213281) and next prime (213287).

It is not an unprimeable number, because it can be changed into a prime (213281) 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, 92 + ... + 659.

It is an arithmetic number, because the mean of its divisors is an integer number (31584).

2²¹³²⁸⁴ is an apocalyptic number.

It is an amenable number.

213284 is a deficient number, since it is larger than the sum of its proper divisors (165724).

213284 is a wasteful number, since it uses less digits than its factorization.

213284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 824 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 213284 is about 461.8268073640. The cubic root of 213284 is about 59.7474570441.

Adding to 213284 its reverse (482312), we get a palindrome (695596).

The spelling of 213284 in words is "two hundred thirteen thousand, two hundred eighty-four".