4312123009 has 2 divisors, whose sum is σ = 4312123010. Its totient is φ = 4312123008.

The previous prime is 4312122977. The next prime is 4312123031. The reversal of 4312123009 is 9003212134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3865730625 + 446392384 = 62175^2 + 21128^2 .

It is a cyclic number.

It is not a de Polignac number, because 4312123009 - 2⁵ = 4312122977 is a prime.

It is not a weakly prime, because it can be changed into another prime (4312124009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2156061504 + 2156061505.

It is an arithmetic number, because the mean of its divisors is an integer number (2156061505).

Almost surely, 2^4312123009 is an apocalyptic number.

It is an amenable number.

4312123009 is a deficient number, since it is larger than the sum of its proper divisors (1).

4312123009 is an equidigital number, since it uses as much as digits as its factorization.

4312123009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 4312123009 is about 65666.7572596668. The cubic root of 4312123009 is about 1627.6600860774.

The spelling of 4312123009 in words is "four billion, three hundred twelve million, one hundred twenty-three thousand, nine".