233938161 has 12 divisors (see below), whose sum is σ = 347043892. Its totient is φ = 151743456.

The previous prime is 233938153. The next prime is 233938193. The reversal of 233938161 is 161839332.

It can be written as a sum of positive squares in 2 ways, for example, as 133056225 + 100881936 = 11535^2 + 10044^2 .

It is not a de Polignac number, because 233938161 - 2³ = 233938153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233938141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350926 + ... + 351591.

Almost surely, 2^233938161 is an apocalyptic number.

It is an amenable number.

233938161 is a deficient number, since it is larger than the sum of its proper divisors (113105731).

233938161 is a wasteful number, since it uses less digits than its factorization.

233938161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702560 (or 702557 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 233938161 is about 15295.0371362740. The cubic root of 233938161 is about 616.1697269770.

The spelling of 233938161 in words is "two hundred thirty-three million, nine hundred thirty-eight thousand, one hundred sixty-one".