233281945 has 16 divisors (see below), whose sum is σ = 311870160. Its totient is φ = 166328064.

The previous prime is 233281927. The next prime is 233281957. The reversal of 233281945 is 549182332.

It can be written as a sum of positive squares in 8 ways, for example, as 4032064 + 229249881 = 2008^2 + 15141^2 .

It is a cyclic number.

It is not a de Polignac number, because 233281945 - 2¹¹ = 233279897 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 59994 + ... + 63763.

It is an arithmetic number, because the mean of its divisors is an integer number (19491885).

Almost surely, 2^233281945 is an apocalyptic number.

It is an amenable number.

233281945 is a deficient number, since it is larger than the sum of its proper divisors (78588215).

233281945 is a wasteful number, since it uses less digits than its factorization.

233281945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123804.

The product of its digits is 51840, while the sum is 37.

The square root of 233281945 is about 15273.5701458434. The cubic root of 233281945 is about 615.5930516544.

The spelling of 233281945 in words is "two hundred thirty-three million, two hundred eighty-one thousand, nine hundred forty-five".