236423 has 4 divisors (see below), whose sum is σ = 257928. Its totient is φ = 214920.

The previous prime is 236407. The next prime is 236429. The reversal of 236423 is 324632.

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 236423 - 2⁴ = 236407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 236395 and 236404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (236429) 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, 10736 + ... + 10757.

It is an arithmetic number, because the mean of its divisors is an integer number (64482).

2²³⁶⁴²³ is an apocalyptic number.

236423 is a deficient number, since it is larger than the sum of its proper divisors (21505).

236423 is a wasteful number, since it uses less digits than its factorization.

236423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21504.

The product of its digits is 864, while the sum is 20.

The square root of 236423 is about 486.2334830100. The cubic root of 236423 is about 61.8343653891.

Subtracting 236423 from its reverse (324632), we obtain a square (88209 = 297²).

It can be divided in two parts, 23 and 6423, that added together give a palindrome (6446).

The spelling of 236423 in words is "two hundred thirty-six thousand, four hundred twenty-three".