163213 has 4 divisors (see below), whose sum is σ = 164160. Its totient is φ = 162268.

The previous prime is 163211. The next prime is 163223. The reversal of 163213 is 312361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 312361 = 7 ⋅44623.

It is a cyclic number.

It is not a de Polignac number, because 163213 - 2¹ = 163211 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133 + ... + 586.

It is an arithmetic number, because the mean of its divisors is an integer number (41040).

2¹⁶³²¹³ is an apocalyptic number.

It is an amenable number.

163213 is a deficient number, since it is larger than the sum of its proper divisors (947).

163213 is an equidigital number, since it uses as much as digits as its factorization.

163213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946.

The product of its digits is 108, while the sum is 16.

The square root of 163213 is about 403.9962871117. The cubic root of 163213 is about 54.6493393098.

Adding to 163213 its reverse (312361), we get a palindrome (475574).

The spelling of 163213 in words is "one hundred sixty-three thousand, two hundred thirteen".