133023305 has 4 divisors (see below), whose sum is σ = 159627972. Its totient is φ = 106418640.

The previous prime is 133023277. The next prime is 133023323. The reversal of 133023305 is 503320331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77862976 + 55160329 = 8824^2 + 7427^2 .

It is a de Polignac number, because none of the positive numbers 2^k-133023305 is a prime.

It is a super-3 number, since 3×133023305³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13302326 + ... + 13302335.

It is an arithmetic number, because the mean of its divisors is an integer number (39906993).

Almost surely, 2^133023305 is an apocalyptic number.

It is an amenable number.

133023305 is a deficient number, since it is larger than the sum of its proper divisors (26604667).

133023305 is an equidigital number, since it uses as much as digits as its factorization.

133023305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26604666.

The product of its (nonzero) digits is 810, while the sum is 20.

The square root of 133023305 is about 11533.5729503047. The cubic root of 133023305 is about 510.4766849059.

Adding to 133023305 its reverse (503320331), we get a palindrome (636343636).

The spelling of 133023305 in words is "one hundred thirty-three million, twenty-three thousand, three hundred five".