43271005321 has 2 divisors, whose sum is σ = 43271005322. Its totient is φ = 43271005320.

The previous prime is 43271005303. The next prime is 43271005361. The reversal of 43271005321 is 12350017234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37744718400 + 5526286921 = 194280^2 + 74339^2 .

It is a cyclic number.

It is not a de Polignac number, because 43271005321 - 2¹⁵ = 43270972553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43271005321.

It is not a weakly prime, because it can be changed into another prime (43271005361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21635502660 + 21635502661.

It is an arithmetic number, because the mean of its divisors is an integer number (21635502661).

Almost surely, 2^43271005321 is an apocalyptic number.

It is an amenable number.

43271005321 is a deficient number, since it is larger than the sum of its proper divisors (1).

43271005321 is an equidigital number, since it uses as much as digits as its factorization.

43271005321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The spelling of 43271005321 in words is "forty-three billion, two hundred seventy-one million, five thousand, three hundred twenty-one".