133423365 has 16 divisors (see below), whose sum is σ = 218020608. Its totient is φ = 69644736.

The previous prime is 133423357. The next prime is 133423417. The reversal of 133423365 is 563324331.

It is not a de Polignac number, because 133423365 - 2³ = 133423357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93922 + ... + 95331.

It is an arithmetic number, because the mean of its divisors is an integer number (13626288).

Almost surely, 2^133423365 is an apocalyptic number.

133423365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133423365 is a deficient number, since it is larger than the sum of its proper divisors (84597243).

133423365 is a wasteful number, since it uses less digits than its factorization.

133423365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189308.

The product of its digits is 19440, while the sum is 30.

The square root of 133423365 is about 11550.9032114376. The cubic root of 133423365 is about 510.9879159166.

Adding to 133423365 its reverse (563324331), we get a palindrome (696747696).

The spelling of 133423365 in words is "one hundred thirty-three million, four hundred twenty-three thousand, three hundred sixty-five".