133321312 has 24 divisors (see below), whose sum is σ = 263848536. Its totient is φ = 66312192.

The previous prime is 133321301. The next prime is 133321319. The reversal of 133321312 is 213123331.

It is a self number, because there is not a number n which added to its sum of digits gives 133321312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133321319) 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 in 3 ways as a sum of consecutive naturals, for example, 4618 + ... + 16969.

It is an arithmetic number, because the mean of its divisors is an integer number (10993689).

Almost surely, 2^133321312 is an apocalyptic number.

It is an amenable number.

133321312 is a deficient number, since it is larger than the sum of its proper divisors (130527224).

133321312 is a wasteful number, since it uses less digits than its factorization.

133321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21790 (or 21782 counting only the distinct ones).

The product of its digits is 324, while the sum is 19.

The square root of 133321312 is about 11546.4848330563. The cubic root of 133321312 is about 510.8576010324.

Adding to 133321312 its reverse (213123331), we get a palindrome (346444643).

The spelling of 133321312 in words is "one hundred thirty-three million, three hundred twenty-one thousand, three hundred twelve".