133311305 has 8 divisors (see below), whose sum is σ = 160056000. Its totient is φ = 106594096.

The previous prime is 133311301. The next prime is 133311313. The reversal of 133311305 is 503113331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133311305 - 2² = 133311301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133311301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5996 + ... + 17394.

It is an arithmetic number, because the mean of its divisors is an integer number (20007000).

Almost surely, 2^133311305 is an apocalyptic number.

It is an amenable number.

133311305 is a deficient number, since it is larger than the sum of its proper divisors (26744695).

133311305 is a wasteful number, since it uses less digits than its factorization.

133311305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13743.

The product of its (nonzero) digits is 405, while the sum is 20.

The square root of 133311305 is about 11546.0514895786. The cubic root of 133311305 is about 510.8448191802.

Adding to 133311305 its reverse (503113331), we get a palindrome (636424636).

The spelling of 133311305 in words is "one hundred thirty-three million, three hundred eleven thousand, three hundred five".