133301305 has 4 divisors (see below), whose sum is σ = 159961572. Its totient is φ = 106641040.

The previous prime is 133301303. The next prime is 133301323. The reversal of 133301305 is 503103331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503103331 = 1559 ⋅322709.

It can be written as a sum of positive squares in 2 ways, for example, as 76510009 + 56791296 = 8747^2 + 7536^2 .

It is not a de Polignac number, because 133301305 - 2¹ = 133301303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133301303) 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, 13330126 + ... + 13330135.

It is an arithmetic number, because the mean of its divisors is an integer number (39990393).

Almost surely, 2^133301305 is an apocalyptic number.

It is an amenable number.

133301305 is a deficient number, since it is larger than the sum of its proper divisors (26660267).

133301305 is an equidigital number, since it uses as much as digits as its factorization.

133301305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26660266.

The product of its (nonzero) digits is 405, while the sum is 19.

The square root of 133301305 is about 11545.6184329814. The cubic root of 133301305 is about 510.8320456300.

Adding to 133301305 its reverse (503103331), we get a palindrome (636404636).

The spelling of 133301305 in words is "one hundred thirty-three million, three hundred one thousand, three hundred five".