133203331 has 2 divisors, whose sum is σ = 133203332. Its totient is φ = 133203330.

The previous prime is 133203307. The next prime is 133203361. The reversal of 133203331 is 133302331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133203331 - 2⁹ = 133202819 is a prime.

It is a super-2 number, since 2×133203331² = 35486254778991122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 133203299 and 133203308.

It is not a weakly prime, because it can be changed into another prime (133203361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66601665 + 66601666.

It is an arithmetic number, because the mean of its divisors is an integer number (66601666).

Almost surely, 2^133203331 is an apocalyptic number.

133203331 is a deficient number, since it is larger than the sum of its proper divisors (1).

133203331 is an equidigital number, since it uses as much as digits as its factorization.

133203331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 133203331 is about 11541.3747448040. The cubic root of 133203331 is about 510.7068642464.

Adding to 133203331 its reverse (133302331), we get a palindrome (266505662).

The spelling of 133203331 in words is "one hundred thirty-three million, two hundred three thousand, three hundred thirty-one".