133220326 has 4 divisors (see below), whose sum is σ = 199830492. Its totient is φ = 66610162.

The previous prime is 133220293. The next prime is 133220327. The reversal of 133220326 is 623022331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 623022331 = 19 ⋅32790649.

It is a junction number, because it is equal to n+sod(n) for n = 133220297 and 133220306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133220327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33305080 + ... + 33305083.

It is an arithmetic number, because the mean of its divisors is an integer number (49957623).

Almost surely, 2^133220326 is an apocalyptic number.

133220326 is a deficient number, since it is larger than the sum of its proper divisors (66610166).

133220326 is an equidigital number, since it uses as much as digits as its factorization.

133220326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66610165.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 133220326 is about 11542.1109854307. The cubic root of 133220326 is about 510.7285831579.

Adding to 133220326 its reverse (623022331), we get a palindrome (756242657).

The spelling of 133220326 in words is "one hundred thirty-three million, two hundred twenty thousand, three hundred twenty-six".