133568313 has 16 divisors (see below), whose sum is σ = 183336960. Its totient is φ = 86453136.

The previous prime is 133568311. The next prime is 133568329. The reversal of 133568313 is 313865331.

It is not a de Polignac number, because 133568313 - 2¹ = 133568311 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133568311) 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, 14178 + ... + 21636.

It is an arithmetic number, because the mean of its divisors is an integer number (11458560).

Almost surely, 2^133568313 is an apocalyptic number.

It is an amenable number.

133568313 is a deficient number, since it is larger than the sum of its proper divisors (49768647).

133568313 is a wasteful number, since it uses less digits than its factorization.

133568313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7636.

The product of its digits is 19440, while the sum is 33.

The square root of 133568313 is about 11557.1758228384. The cubic root of 133568313 is about 511.1728906926.

The spelling of 133568313 in words is "one hundred thirty-three million, five hundred sixty-eight thousand, three hundred thirteen".