326640233 has 2 divisors, whose sum is σ = 326640234. Its totient is φ = 326640232.

The previous prime is 326640221. The next prime is 326640241. The reversal of 326640233 is 332046623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 322094809 + 4545424 = 17947^2 + 2132^2 .

It is a cyclic number.

It is not a de Polignac number, because 326640233 - 2⁸ = 326639977 is a prime.

It is equal to p_17614163 and since 326640233 and 17614163 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 326640196 and 326640205.

It is not a weakly prime, because it can be changed into another prime (326640263) 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, 163320116 + 163320117.

It is an arithmetic number, because the mean of its divisors is an integer number (163320117).

Almost surely, 2^326640233 is an apocalyptic number.

It is an amenable number.

326640233 is a deficient number, since it is larger than the sum of its proper divisors (1).

326640233 is an equidigital number, since it uses as much as digits as its factorization.

326640233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 29.

The square root of 326640233 is about 18073.1910021446. The cubic root of 326640233 is about 688.6891256614.

Adding to 326640233 its reverse (332046623), we get a palindrome (658686856).

The spelling of 326640233 in words is "three hundred twenty-six million, six hundred forty thousand, two hundred thirty-three".