133365313 has 12 divisors (see below), whose sum is σ = 142481808. Its totient is φ = 124795800.

The previous prime is 133365301. The next prime is 133365329. The reversal of 133365313 is 313563331.

It is not a de Polignac number, because 133365313 - 2²⁵ = 99810881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133365613) 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 11 ways as a sum of consecutive naturals, for example, 27738 + ... + 32188.

It is an arithmetic number, because the mean of its divisors is an integer number (11873484).

Almost surely, 2^133365313 is an apocalyptic number.

It is an amenable number.

133365313 is a deficient number, since it is larger than the sum of its proper divisors (9116495).

133365313 is an equidigital number, since it uses as much as digits as its factorization.

133365313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572 (or 4553 counting only the distinct ones).

The product of its digits is 7290, while the sum is 28.

The square root of 133365313 is about 11548.3900609565. The cubic root of 133365313 is about 510.9137955311.

The spelling of 133365313 in words is "one hundred thirty-three million, three hundred sixty-five thousand, three hundred thirteen".