235109 has 4 divisors (see below), whose sum is σ = 268704. Its totient is φ = 201516.

The previous prime is 235099. The next prime is 235111. The reversal of 235109 is 901532.

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 de Polignac number, because none of the positive numbers 2^k-235109 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16787 + ... + 16800.

It is an arithmetic number, because the mean of its divisors is an integer number (67176).

2²³⁵¹⁰⁹ is an apocalyptic number.

It is an amenable number.

235109 is a deficient number, since it is larger than the sum of its proper divisors (33595).

235109 is an equidigital number, since it uses as much as digits as its factorization.

235109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33594.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 235109 is about 484.8803976240. The cubic root of 235109 is about 61.7195974407.

The spelling of 235109 in words is "two hundred thirty-five thousand, one hundred nine".