233021 has 2 divisors, whose sum is σ = 233022. Its totient is φ = 233020.

The previous prime is 232987. The next prime is 233069. The reversal of 233021 is 120332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225625 + 7396 = 475^2 + 86^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233021 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 232993 and 233011.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 233021.

It is not a weakly prime, because it can be changed into another prime (233071) 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 as a sum of consecutive naturals, namely, 116510 + 116511.

It is an arithmetic number, because the mean of its divisors is an integer number (116511).

2²³³⁰²¹ is an apocalyptic number.

It is an amenable number.

233021 is a deficient number, since it is larger than the sum of its proper divisors (1).

233021 is an equidigital number, since it uses as much as digits as its factorization.

233021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 233021 is about 482.7224875640. The cubic root of 233021 is about 61.5363435569.

Adding to 233021 its reverse (120332), we get a palindrome (353353).

The spelling of 233021 in words is "two hundred thirty-three thousand, twenty-one".