10311000209 has 2 divisors, whose sum is σ = 10311000210. Its totient is φ = 10311000208.

The previous prime is 10311000181. The next prime is 10311000233. The reversal of 10311000209 is 90200011301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10256017984 + 54982225 = 101272^2 + 7415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10311000209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10311000239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5155500104 + 5155500105.

It is an arithmetic number, because the mean of its divisors is an integer number (5155500105).

Almost surely, 2^10311000209 is an apocalyptic number.

It is an amenable number.

10311000209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10311000209 is an equidigital number, since it uses as much as digits as its factorization.

10311000209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

The spelling of 10311000209 in words is "ten billion, three hundred eleven million, two hundred nine", and thus it is an aban number.