235509121 has 4 divisors (see below), whose sum is σ = 245748672. Its totient is φ = 225269572.

The previous prime is 235509119. The next prime is 235509163. The reversal of 235509121 is 121905532.

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 cyclic number.

It is not a de Polignac number, because 235509121 - 2¹ = 235509119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 235509121.

It is not an unprimeable number, because it can be changed into a prime (235509101) 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, 5119741 + ... + 5119786.

It is an arithmetic number, because the mean of its divisors is an integer number (61437168).

Almost surely, 2^235509121 is an apocalyptic number.

It is an amenable number.

235509121 is a deficient number, since it is larger than the sum of its proper divisors (10239551).

235509121 is a wasteful number, since it uses less digits than its factorization.

235509121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10239550.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 235509121 is about 15346.3064285840. The cubic root of 235509121 is about 617.5459016182.

The spelling of 235509121 in words is "two hundred thirty-five million, five hundred nine thousand, one hundred twenty-one".