233220143 has 4 divisors (see below), whose sum is σ = 251160168. Its totient is φ = 215280120.

The previous prime is 233220109. The next prime is 233220149. The reversal of 233220143 is 341022332.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 233220143 - 2⁸ = 233219887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233220149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8969993 + ... + 8970018.

It is an arithmetic number, because the mean of its divisors is an integer number (62790042).

Almost surely, 2^233220143 is an apocalyptic number.

233220143 is a deficient number, since it is larger than the sum of its proper divisors (17940025).

233220143 is a wasteful number, since it uses less digits than its factorization.

233220143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17940024.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 233220143 is about 15271.5468437222. The cubic root of 233220143 is about 615.5386850496.

Adding to 233220143 its reverse (341022332), we get a palindrome (574242475).

The spelling of 233220143 in words is "two hundred thirty-three million, two hundred twenty thousand, one hundred forty-three".