133303230 has 48 divisors (see below), whose sum is σ = 355964544. Its totient is φ = 34585920.

The previous prime is 133303217. The next prime is 133303237. The reversal of 133303230 is 32303331.

133303230 is a `hidden beast` number, since 13 + 330 + 323 + 0 = 666.

It is a super-2 number, since 2×133303230² = 35539502256865800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133303237) 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 23 ways as a sum of consecutive naturals, for example, 16686 + ... + 23345.

It is an arithmetic number, because the mean of its divisors is an integer number (7415928).

Almost surely, 2^133303230 is an apocalyptic number.

133303230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133303230 is an abundant number, since it is smaller than the sum of its proper divisors (222661314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133303230 is a wasteful number, since it uses less digits than its factorization.

133303230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40081 (or 40078 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 18.

The square root of 133303230 is about 11545.7017976388. The cubic root of 133303230 is about 510.8345045880.

Adding to 133303230 its reverse (32303331), we get a palindrome (165606561).

The spelling of 133303230 in words is "one hundred thirty-three million, three hundred three thousand, two hundred thirty".