43023297209 has 2 divisors, whose sum is σ = 43023297210. Its totient is φ = 43023297208.

The previous prime is 43023297199. The next prime is 43023297227. The reversal of 43023297209 is 90279232034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39455863225 + 3567433984 = 198635^2 + 59728^2 .

It is a cyclic number.

It is not a de Polignac number, because 43023297209 - 2²⁴ = 43006519993 is a prime.

It is not a weakly prime, because it can be changed into another prime (43023297409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21511648604 + 21511648605.

It is an arithmetic number, because the mean of its divisors is an integer number (21511648605).

Almost surely, 2^43023297209 is an apocalyptic number.

It is an amenable number.

43023297209 is a deficient number, since it is larger than the sum of its proper divisors (1).

43023297209 is an equidigital number, since it uses as much as digits as its factorization.

43023297209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 41.

The spelling of 43023297209 in words is "forty-three billion, twenty-three million, two hundred ninety-seven thousand, two hundred nine".