235289 has 2 divisors, whose sum is σ = 235290. Its totient is φ = 235288.

The previous prime is 235273. The next prime is 235307. The reversal of 235289 is 982532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235225 + 64 = 485^2 + 8^2 .

It is a cyclic number.

It is not a de Polignac number, because 235289 - 2⁴ = 235273 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (235489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117644 + 117645.

It is an arithmetic number, because the mean of its divisors is an integer number (117645).

2²³⁵²⁸⁹ is an apocalyptic number.

It is an amenable number.

235289 is a deficient number, since it is larger than the sum of its proper divisors (1).

235289 is an equidigital number, since it uses as much as digits as its factorization.

235289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 235289 is about 485.0659748941. The cubic root of 235289 is about 61.7353443121.

The spelling of 235289 in words is "two hundred thirty-five thousand, two hundred eighty-nine".