233981281 has 8 divisors (see below), whose sum is σ = 238218624. Its totient is φ = 229770240.

The previous prime is 233981263. The next prime is 233981291. The reversal of 233981281 is 182189332.

233981281 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 233981281 - 2⁵ = 233981249 is a prime.

It is a super-2 number, since 2×233981281² = 109494479716801922, which contains 22 as substring.

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 233981281.

It is not an unprimeable number, because it can be changed into a prime (233981291) 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, 11836 + ... + 24658.

It is an arithmetic number, because the mean of its divisors is an integer number (29777328).

Almost surely, 2^233981281 is an apocalyptic number.

It is an amenable number.

233981281 is a deficient number, since it is larger than the sum of its proper divisors (4237343).

233981281 is a wasteful number, since it uses less digits than its factorization.

233981281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13151.

The product of its digits is 20736, while the sum is 37.

The square root of 233981281 is about 15296.4466788859. The cubic root of 233981281 is about 616.2075825741.

The spelling of 233981281 in words is "two hundred thirty-three million, nine hundred eighty-one thousand, two hundred eighty-one".