133031144 has 8 divisors (see below), whose sum is σ = 249433410. Its totient is φ = 66515568.

The previous prime is 133031123. The next prime is 133031159. The reversal of 133031144 is 441130331.

It can be written as a sum of positive squares in only one way, i.e., 87198244 + 45832900 = 9338^2 + 6770^2 .

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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8314439 + ... + 8314454.

Almost surely, 2^133031144 is an apocalyptic number.

It is an amenable number.

133031144 is a deficient number, since it is larger than the sum of its proper divisors (116402266).

133031144 is a wasteful number, since it uses less digits than its factorization.

133031144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16628899 (or 16628895 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 133031144 is about 11533.9127792783. The cubic root of 133031144 is about 510.4867120916.

Adding to 133031144 its reverse (441130331), we get a palindrome (574161475).

The spelling of 133031144 in words is "one hundred thirty-three million, thirty-one thousand, one hundred forty-four".