233147 has 6 divisors (see below), whose sum is σ = 240492. Its totient is φ = 225992.

The previous prime is 233143. The next prime is 233159. The reversal of 233147 is 741332.

It is not a de Polignac number, because 233147 - 2² = 233143 is a prime.

It is an Ulam number.

It is a Duffinian number.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2768 + ... + 2850.

It is an arithmetic number, because the mean of its divisors is an integer number (40082).

2²³³¹⁴⁷ is an apocalyptic number.

233147 is a deficient number, since it is larger than the sum of its proper divisors (7345).

233147 is an frugal number, since it uses more digits than its factorization.

233147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 136 counting only the distinct ones).

The product of its digits is 504, while the sum is 20.

The square root of 233147 is about 482.8529796946. The cubic root of 233147 is about 61.5474329468.

Adding to 233147 its reverse (741332), we get a palindrome (974479).

The spelling of 233147 in words is "two hundred thirty-three thousand, one hundred forty-seven".