133143656 has 16 divisors (see below), whose sum is σ = 250719300. Its totient is φ = 66285184.

The previous prime is 133143653. The next prime is 133143683. The reversal of 133143656 is 656341331.

It can be written as a sum of positive squares in 2 ways, for example, as 104734756 + 28408900 = 10234^2 + 5330^2 .

It is a super-3 number, since 3×133143656³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (133143653) 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 3 ways as a sum of consecutive naturals, for example, 33851 + ... + 37578.

Almost surely, 2^133143656 is an apocalyptic number.

It is an amenable number.

133143656 is a deficient number, since it is larger than the sum of its proper divisors (117575644).

133143656 is a wasteful number, since it uses less digits than its factorization.

133143656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71668 (or 71664 counting only the distinct ones).

The product of its digits is 19440, while the sum is 32.

The square root of 133143656 is about 11538.7891912453. The cubic root of 133143656 is about 510.6305874142.

Adding to 133143656 its reverse (656341331), we get a palindrome (789484987).

The spelling of 133143656 in words is "one hundred thirty-three million, one hundred forty-three thousand, six hundred fifty-six".