133302231 has 12 divisors (see below), whose sum is σ = 197752152. Its totient is φ = 86466096.

The previous prime is 133302229. The next prime is 133302283. The reversal of 133302231 is 132203331.

133302231 is a `hidden beast` number, since 133 + 302 + 231 = 666.

It is not a de Polignac number, because 133302231 - 2¹ = 133302229 is a prime.

It is a super-2 number, since 2×133302231² = 35538969579154722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133302431) 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 11 ways as a sum of consecutive naturals, for example, 199821 + ... + 200486.

It is an arithmetic number, because the mean of its divisors is an integer number (16479346).

Almost surely, 2^133302231 is an apocalyptic number.

133302231 is a deficient number, since it is larger than the sum of its proper divisors (64449921).

133302231 is a wasteful number, since it uses less digits than its factorization.

133302231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400350 (or 400347 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 133302231 is about 11545.6585347047. The cubic root of 133302231 is about 510.8332284876.

Adding to 133302231 its reverse (132203331), we get a palindrome (265505562).

The spelling of 133302231 in words is "one hundred thirty-three million, three hundred two thousand, two hundred thirty-one".