133523312 has 40 divisors (see below), whose sum is σ = 279305040. Its totient is φ = 61470720.

The previous prime is 133523311. The next prime is 133523339. The reversal of 133523312 is 213325331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133523311) 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 7 ways as a sum of consecutive naturals, for example, 143264 + ... + 144192.

It is an arithmetic number, because the mean of its divisors is an integer number (6982626).

Almost surely, 2^133523312 is an apocalyptic number.

It is an amenable number.

133523312 is an abundant number, since it is smaller than the sum of its proper divisors (145781728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133523312 is a wasteful number, since it uses less digits than its factorization.

133523312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641 (or 1635 counting only the distinct ones).

The product of its digits is 1620, while the sum is 23.

The square root of 133523312 is about 11555.2287731572. The cubic root of 133523312 is about 511.1154771874.

Adding to 133523312 its reverse (213325331), we get a palindrome (346848643).

The spelling of 133523312 in words is "one hundred thirty-three million, five hundred twenty-three thousand, three hundred twelve".