133568312 has 16 divisors (see below), whose sum is σ = 251368800. Its totient is φ = 66536640.

The previous prime is 133568311. The next prime is 133568329. The reversal of 133568312 is 213865331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133568311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28637 + ... + 32972.

It is an arithmetic number, because the mean of its divisors is an integer number (15710550).

Almost surely, 2^133568312 is an apocalyptic number.

It is an amenable number.

133568312 is a deficient number, since it is larger than the sum of its proper divisors (117800488).

133568312 is a wasteful number, since it uses less digits than its factorization.

133568312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61886 (or 61882 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 133568312 is about 11557.1757795752. The cubic root of 133568312 is about 511.1728894169.

The spelling of 133568312 in words is "one hundred thirty-three million, five hundred sixty-eight thousand, three hundred twelve".