43031452309 has 2 divisors, whose sum is σ = 43031452310. Its totient is φ = 43031452308.

The previous prime is 43031452267. The next prime is 43031452327. The reversal of 43031452309 is 90325413034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40503575025 + 2527877284 = 201255^2 + 50278^2 .

It is a cyclic number.

It is not a de Polignac number, because 43031452309 - 2¹¹ = 43031450261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43031422309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21515726154 + 21515726155.

It is an arithmetic number, because the mean of its divisors is an integer number (21515726155).

Almost surely, 2^43031452309 is an apocalyptic number.

It is an amenable number.

43031452309 is a deficient number, since it is larger than the sum of its proper divisors (1).

43031452309 is an equidigital number, since it uses as much as digits as its factorization.

43031452309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 34.

The spelling of 43031452309 in words is "forty-three billion, thirty-one million, four hundred fifty-two thousand, three hundred nine".