43240203133 has 4 divisors (see below), whose sum is σ = 43340065468. Its totient is φ = 43140340800.

The previous prime is 43240203121. The next prime is 43240203179. The reversal of 43240203133 is 33130204234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33130204234 = 2 ⋅16565102117.

It can be written as a sum of positive squares in 2 ways, for example, as 9161935524 + 34078267609 = 95718^2 + 184603^2 .

It is a cyclic number.

It is not a de Polignac number, because 43240203133 - 2⁵ = 43240203101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43240203098 and 43240203107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43240263133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49930518 + ... + 49931383.

It is an arithmetic number, because the mean of its divisors is an integer number (10835016367).

Almost surely, 2^43240203133 is an apocalyptic number.

It is an amenable number.

43240203133 is a deficient number, since it is larger than the sum of its proper divisors (99862335).

43240203133 is an equidigital number, since it uses as much as digits as its factorization.

43240203133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99862334.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 43240203133 its reverse (33130204234), we get a palindrome (76370407367).

The spelling of 43240203133 in words is "forty-three billion, two hundred forty million, two hundred three thousand, one hundred thirty-three".