43133133 has 4 divisors (see below), whose sum is σ = 57510848. Its totient is φ = 28755420.

The previous prime is 43133113. The next prime is 43133147. The reversal of 43133133 is 33133134.

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 a de Polignac number, because none of the positive numbers 2^k-43133133 is a prime.

It is a super-3 number, since 3×43133133³ (a number of 24 digits) contains 333 as substring.

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 (43133113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7188853 + ... + 7188858.

It is an arithmetic number, because the mean of its divisors is an integer number (14377712).

Almost surely, 2^43133133 is an apocalyptic number.

It is an amenable number.

43133133 is a deficient number, since it is larger than the sum of its proper divisors (14377715).

43133133 is a wasteful number, since it uses less digits than its factorization.

43133133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14377714.

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

The square root of 43133133 is about 6567.5819751260. The cubic root of 43133133 is about 350.7009977898.

Adding to 43133133 its reverse (33133134), we get a palindrome (76266267).

Subtracting from 43133133 its reverse (33133134), we obtain a palindrome (9999999).

The spelling of 43133133 in words is "forty-three million, one hundred thirty-three thousand, one hundred thirty-three".