236261 has 2 divisors, whose sum is σ = 236262. Its totient is φ = 236260.

The previous prime is 236231. The next prime is 236287. The reversal of 236261 is 162632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231361 + 4900 = 481^2 + 70^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-236261 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (236231) 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 as a sum of consecutive naturals, namely, 118130 + 118131.

It is an arithmetic number, because the mean of its divisors is an integer number (118131).

2²³⁶²⁶¹ is an apocalyptic number.

It is an amenable number.

236261 is a deficient number, since it is larger than the sum of its proper divisors (1).

236261 is an equidigital number, since it uses as much as digits as its factorization.

236261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 20.

The square root of 236261 is about 486.0668678279. The cubic root of 236261 is about 61.8202389349.

Adding to 236261 its reverse (162632), we get a palindrome (398893).

It can be divided in two parts, 2 and 36261, that added together give a palindrome (36263).

The spelling of 236261 in words is "two hundred thirty-six thousand, two hundred sixty-one".