233132321 has 2 divisors, whose sum is σ = 233132322. Its totient is φ = 233132320.

The previous prime is 233132303. The next prime is 233132351. The reversal of 233132321 is 123231332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212110096 + 21022225 = 14564^2 + 4585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233132321 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 233132293 and 233132302.

It is not a weakly prime, because it can be changed into another prime (233132351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116566160 + 116566161.

It is an arithmetic number, because the mean of its divisors is an integer number (116566161).

Almost surely, 2^233132321 is an apocalyptic number.

It is an amenable number.

233132321 is a deficient number, since it is larger than the sum of its proper divisors (1).

233132321 is an equidigital number, since it uses as much as digits as its factorization.

233132321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 20.

The square root of 233132321 is about 15268.6712257485. The cubic root of 233132321 is about 615.4614123857.

Adding to 233132321 its reverse (123231332), we get a palindrome (356363653).

The spelling of 233132321 in words is "two hundred thirty-three million, one hundred thirty-two thousand, three hundred twenty-one".