43207133 has 6 divisors (see below), whose sum is σ = 45167934. Its totient is φ = 41328056.

The previous prime is 43207123. The next prime is 43207139. The reversal of 43207133 is 33170234.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 34128964 + 9078169 = 5842^2 + 3013^2 .

It is not a de Polignac number, because 43207133 - 2⁴ = 43207117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43207099 and 43207108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43207139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40310 + ... + 41367.

It is an arithmetic number, because the mean of its divisors is an integer number (7527989).

Almost surely, 2^43207133 is an apocalyptic number.

It is an amenable number.

43207133 is a deficient number, since it is larger than the sum of its proper divisors (1960801).

43207133 is an equidigital number, since it uses as much as digits as its factorization.

43207133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81723 (or 81700 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 43207133 is about 6573.2132933596. The cubic root of 43207133 is about 350.9014395769.

Adding to 43207133 its reverse (33170234), we get a palindrome (76377367).

The spelling of 43207133 in words is "forty-three million, two hundred seven thousand, one hundred thirty-three".