133523338 has 32 divisors (see below), whose sum is σ = 229778640. Its totient is φ = 57646080.

The previous prime is 133523311. The next prime is 133523339. The reversal of 133523338 is 833325331.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 21650409 + 111872929 = 4653^2 + 10577^2 .

It is not an unprimeable number, because it can be changed into a prime (133523339) 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 in 15 ways as a sum of consecutive naturals, for example, 79168 + ... + 80836.

Almost surely, 2^133523338 is an apocalyptic number.

133523338 is a deficient number, since it is larger than the sum of its proper divisors (96255302).

133523338 is a wasteful number, since it uses less digits than its factorization.

133523338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882.

The product of its digits is 19440, while the sum is 31.

The square root of 133523338 is about 11555.2298981890. The cubic root of 133523338 is about 511.1155103626.

Adding to 133523338 its reverse (833325331), we get a palindrome (966848669).

It can be divided in two parts, 13352 and 3338, that multiplied together give a square (44568976 = 6676²).

The spelling of 133523338 in words is "one hundred thirty-three million, five hundred twenty-three thousand, three hundred thirty-eight".