133031212 has 12 divisors (see below), whose sum is σ = 233041536. Its totient is φ = 66447920.

The previous prime is 133031203. The next prime is 133031221. The reversal of 133031212 is 212130331.

133031212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (133031203) and next prime (133031221).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12364 + ... + 20467.

It is an arithmetic number, because the mean of its divisors is an integer number (19420128).

Almost surely, 2^133031212 is an apocalyptic number.

It is an amenable number.

133031212 is a deficient number, since it is larger than the sum of its proper divisors (100010324).

133031212 is a wasteful number, since it uses less digits than its factorization.

133031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33848 (or 33846 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 133031212 is about 11533.9157271067. The cubic root of 133031212 is about 510.4867990714.

Adding to 133031212 its reverse (212130331), we get a palindrome (345161543).

The spelling of 133031212 in words is "one hundred thirty-three million, thirty-one thousand, two hundred twelve".