133431112 has 8 divisors (see below), whose sum is σ = 250183350. Its totient is φ = 66715552.

The previous prime is 133431101. The next prime is 133431121. The reversal of 133431112 is 211134331.

It can be written as a sum of positive squares in only one way, i.e., 130096836 + 3334276 = 11406^2 + 1826^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 133431112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8339437 + ... + 8339452.

Almost surely, 2^133431112 is an apocalyptic number.

It is an amenable number.

133431112 is a deficient number, since it is larger than the sum of its proper divisors (116752238).

133431112 is a wasteful number, since it uses less digits than its factorization.

133431112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16678895 (or 16678891 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 133431112 is about 11551.2385483116. The cubic root of 133431112 is about 510.9978056056.

Adding to 133431112 its reverse (211134331), we get a palindrome (344565443).

The spelling of 133431112 in words is "one hundred thirty-three million, four hundred thirty-one thousand, one hundred twelve".