2320123009 has 2 divisors, whose sum is σ = 2320123010. Its totient is φ = 2320123008.

The previous prime is 2320122947. The next prime is 2320123027. The reversal of 2320123009 is 9003210232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1492122384 + 828000625 = 38628^2 + 28775^2 .

It is a cyclic number.

It is not a de Polignac number, because 2320123009 - 2⁷ = 2320122881 is a prime.

It is not a weakly prime, because it can be changed into another prime (2320123409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160061504 + 1160061505.

It is an arithmetic number, because the mean of its divisors is an integer number (1160061505).

Almost surely, 2^2320123009 is an apocalyptic number.

It is an amenable number.

2320123009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2320123009 is an equidigital number, since it uses as much as digits as its factorization.

2320123009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 2320123009 is about 48167.6552159226. The cubic root of 2320123009 is about 1323.8445860194.

The spelling of 2320123009 in words is "two billion, three hundred twenty million, one hundred twenty-three thousand, nine".