213267 has 4 divisors (see below), whose sum is σ = 284360. Its totient is φ = 142176.

The previous prime is 213263. The next prime is 213281. The reversal of 213267 is 762312.

It is a happy number.

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

It is not a de Polignac number, because 213267 - 2² = 213263 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 2¹⁵ + 3¹¹ + 6⁴ + 7 .

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213263) 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, 35542 + ... + 35547.

It is an arithmetic number, because the mean of its divisors is an integer number (71090).

2²¹³²⁶⁷ is an apocalyptic number.

213267 is a deficient number, since it is larger than the sum of its proper divisors (71093).

213267 is an equidigital number, since it uses as much as digits as its factorization.

213267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71092.

The product of its digits is 504, while the sum is 21.

The square root of 213267 is about 461.8084018292. The cubic root of 213267 is about 59.7458695930.

Adding to 213267 its reverse (762312), we get a palindrome (975579).

The spelling of 213267 in words is "two hundred thirteen thousand, two hundred sixty-seven".