233505381 has 8 divisors (see below), whose sum is σ = 311425344. Its totient is φ = 155627840.

The previous prime is 233505367. The next prime is 233505401. The reversal of 233505381 is 183505332.

233505381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 233505381 - 2¹⁸ = 233243237 is a prime.

It is a super-2 number, since 2×233505381² = 109049525911910322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233505301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5920 + ... + 22406.

It is an arithmetic number, because the mean of its divisors is an integer number (38928168).

Almost surely, 2^233505381 is an apocalyptic number.

It is an amenable number.

233505381 is a deficient number, since it is larger than the sum of its proper divisors (77919963).

233505381 is a wasteful number, since it uses less digits than its factorization.

233505381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21211.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 233505381 is about 15280.8828606203. The cubic root of 233505381 is about 615.7895260094.

The spelling of 233505381 in words is "two hundred thirty-three million, five hundred five thousand, three hundred eighty-one".