233981065 has 16 divisors (see below), whose sum is σ = 284429376. Its totient is φ = 184766400.

The previous prime is 233981039. The next prime is 233981071. The reversal of 233981065 is 560189332.

It is not a de Polignac number, because 233981065 - 2¹¹ = 233979017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137359 + ... + 139051.

It is an arithmetic number, because the mean of its divisors is an integer number (17776836).

Almost surely, 2^233981065 is an apocalyptic number.

It is an amenable number.

233981065 is a deficient number, since it is larger than the sum of its proper divisors (50448311).

233981065 is a wasteful number, since it uses less digits than its factorization.

233981065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 233981065 is about 15296.4396184210. The cubic root of 233981065 is about 616.2073929566.

The spelling of 233981065 in words is "two hundred thirty-three million, nine hundred eighty-one thousand, sixty-five".