233421143 has 4 divisors (see below), whose sum is σ = 233603520. Its totient is φ = 233238768.

The previous prime is 233421127. The next prime is 233421151. The reversal of 233421143 is 341124332.

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 233421143 - 2⁴ = 233421127 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 (233421113) 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, 89255 + ... + 91832.

It is an arithmetic number, because the mean of its divisors is an integer number (58400880).

Almost surely, 2^233421143 is an apocalyptic number.

233421143 is a deficient number, since it is larger than the sum of its proper divisors (182377).

233421143 is a wasteful number, since it uses less digits than its factorization.

233421143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182376.

The product of its digits is 1728, while the sum is 23.

The square root of 233421143 is about 15278.1262921865. The cubic root of 233421143 is about 615.7154675917.

Adding to 233421143 its reverse (341124332), we get a palindrome (574545475).

The spelling of 233421143 in words is "two hundred thirty-three million, four hundred twenty-one thousand, one hundred forty-three".