236213 has 4 divisors (see below), whose sum is σ = 237600. Its totient is φ = 234828.

The previous prime is 236209. The next prime is 236219. The reversal of 236213 is 312632.

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.

It is a cyclic number.

It is not a de Polignac number, because 236213 - 2² = 236209 is a prime.

It is a d-powerful number, because it can be written as 2 + 3¹⁰ + 2³ + 6 + 1 + 3¹¹ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 236191 and 236200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (236219) 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, 395 + ... + 792.

It is an arithmetic number, because the mean of its divisors is an integer number (59400).

2²³⁶²¹³ is an apocalyptic number.

It is an amenable number.

236213 is a deficient number, since it is larger than the sum of its proper divisors (1387).

236213 is a wasteful number, since it uses less digits than its factorization.

236213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386.

The product of its digits is 216, while the sum is 17.

The square root of 236213 is about 486.0174893972. The cubic root of 236213 is about 61.8160520788.

Subtracting from 236213 its sum of digits (17), we obtain a square (236196 = 486²).

Adding to 236213 its reverse (312632), we get a palindrome (548845).

The spelling of 236213 in words is "two hundred thirty-six thousand, two hundred thirteen".