215223 has 4 divisors (see below), whose sum is σ = 286968. Its totient is φ = 143480.

The previous prime is 215197. The next prime is 215239. The reversal of 215223 is 322512.

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

It is a cyclic number.

It is not a de Polignac number, because 215223 - 2⁵ = 215191 is a prime.

It is a D-number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215273) 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, 35868 + ... + 35873.

It is an arithmetic number, because the mean of its divisors is an integer number (71742).

2²¹⁵²²³ is an apocalyptic number.

215223 is a deficient number, since it is larger than the sum of its proper divisors (71745).

215223 is an equidigital number, since it uses as much as digits as its factorization.

215223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71744.

The product of its digits is 120, while the sum is 15.

The square root of 215223 is about 463.9213295377. The cubic root of 215223 is about 59.9279691160.

Adding to 215223 its reverse (322512), we get a palindrome (537735).

It can be divided in two parts, 2 and 15223, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 215223 in words is "two hundred fifteen thousand, two hundred twenty-three".