133442312 has 8 divisors (see below), whose sum is σ = 250204350. Its totient is φ = 66721152.

The previous prime is 133442293. The next prime is 133442327. The reversal of 133442312 is 213244331.

It can be written as a sum of positive squares in only one way, i.e., 91891396 + 41550916 = 9586^2 + 6446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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, 8340137 + ... + 8340152.

Almost surely, 2^133442312 is an apocalyptic number.

It is an amenable number.

133442312 is a deficient number, since it is larger than the sum of its proper divisors (116762038).

133442312 is a wasteful number, since it uses less digits than its factorization.

133442312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16680295 (or 16680291 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 133442312 is about 11551.7233346371. The cubic root of 133442312 is about 511.0121026592.

Adding to 133442312 its reverse (213244331), we get a palindrome (346686643).

The spelling of 133442312 in words is "one hundred thirty-three million, four hundred forty-two thousand, three hundred twelve".