236215 has 16 divisors (see below), whose sum is σ = 343872. Its totient is φ = 152064.

The previous prime is 236209. The next prime is 236219. The reversal of 236215 is 512632.

It is a happy number.

It is a 9-Lehmer number, since φ(236215) divides (236215-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 236215 - 2³ = 236207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 236192 and 236201.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397 + ... + 793.

It is an arithmetic number, because the mean of its divisors is an integer number (21492).

2²³⁶²¹⁵ is an apocalyptic number.

236215 is the 397-th pentagonal number.

236215 is a deficient number, since it is larger than the sum of its proper divisors (107657).

236215 is a wasteful number, since it uses less digits than its factorization.

236215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426.

The product of its digits is 360, while the sum is 19.

The square root of 236215 is about 486.0195469320. The cubic root of 236215 is about 61.8162265424.

Subtracting from 236215 its sum of digits (19), we obtain a square (236196 = 486²).

Adding to 236215 its reverse (512632), we get a palindrome (748847).

The spelling of 236215 in words is "two hundred thirty-six thousand, two hundred fifteen".