233145 has 32 divisors (see below), whose sum is σ = 455040. Its totient is φ = 112320.

The previous prime is 233143. The next prime is 233159. The reversal of 233145 is 541332.

It is not a de Polignac number, because 233145 - 2¹ = 233143 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 233145.

It is not an unprimeable number, because it can be changed into a prime (233141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1407 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (14220).

2²³³¹⁴⁵ is an apocalyptic number.

It is an amenable number.

233145 is a deficient number, since it is larger than the sum of its proper divisors (221895).

233145 is a wasteful number, since it uses less digits than its factorization.

233145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 176 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 233145 is about 482.8509086664. The cubic root of 233145 is about 61.5472569560.

Adding to 233145 its reverse (541332), we get a palindrome (774477).

It can be divided in two parts, 233 and 145, that added together give a triangular number (378 = T₂₇).

The spelling of 233145 in words is "two hundred thirty-three thousand, one hundred forty-five".