33143133 has 4 divisors (see below), whose sum is σ = 44190848. Its totient is φ = 22095420.

The previous prime is 33143059. The next prime is 33143147. The reversal of 33143133 is 33134133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 33143133 - 2¹⁸ = 32880989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33143233) 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, 5523853 + ... + 5523858.

It is an arithmetic number, because the mean of its divisors is an integer number (11047712).

Almost surely, 2^33143133 is an apocalyptic number.

It is an amenable number.

33143133 is a deficient number, since it is larger than the sum of its proper divisors (11047715).

33143133 is a wasteful number, since it uses less digits than its factorization.

33143133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11047714.

The product of its digits is 972, while the sum is 21.

The square root of 33143133 is about 5757.0072954618. The cubic root of 33143133 is about 321.2165055643.

Adding to 33143133 its reverse (33134133), we get a palindrome (66277266).

The spelling of 33143133 in words is "thirty-three million, one hundred forty-three thousand, one hundred thirty-three".