133898312 has 8 divisors (see below), whose sum is σ = 251059350. Its totient is φ = 66949152.

The previous prime is 133898267. The next prime is 133898327. The reversal of 133898312 is 213898331.

It can be written as a sum of positive squares in only one way, i.e., 98922916 + 34975396 = 9946^2 + 5914^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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, 8368637 + ... + 8368652.

Almost surely, 2^133898312 is an apocalyptic number.

It is an amenable number.

133898312 is a deficient number, since it is larger than the sum of its proper divisors (117161038).

133898312 is a wasteful number, since it uses less digits than its factorization.

133898312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16737295 (or 16737291 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 133898312 is about 11571.4438165684. The cubic root of 133898312 is about 511.5935189294.

The spelling of 133898312 in words is "one hundred thirty-three million, eight hundred ninety-eight thousand, three hundred twelve".