133303323 has 4 divisors (see below), whose sum is σ = 177737768. Its totient is φ = 88868880.

The previous prime is 133303279. The next prime is 133303337. The reversal of 133303323 is 323303331.

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

It is not a de Polignac number, because 133303323 - 2⁸ = 133303067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133303323.

It is not an unprimeable number, because it can be changed into a prime (133303523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22217218 + ... + 22217223.

It is an arithmetic number, because the mean of its divisors is an integer number (44434442).

Almost surely, 2^133303323 is an apocalyptic number.

133303323 is a deficient number, since it is larger than the sum of its proper divisors (44434445).

133303323 is an equidigital number, since it uses as much as digits as its factorization.

133303323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44434444.

The product of its (nonzero) digits is 1458, while the sum is 21.

The square root of 133303323 is about 11545.7058251109. The cubic root of 133303323 is about 510.8346233839.

Adding to 133303323 its reverse (323303331), we get a palindrome (456606654).

It can be divided in two parts, 13330 and 3323, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 133303323 in words is "one hundred thirty-three million, three hundred three thousand, three hundred twenty-three".