20310013109 has 2 divisors, whose sum is σ = 20310013110. Its totient is φ = 20310013108.

The previous prime is 20310013069. The next prime is 20310013189. The reversal of 20310013109 is 90131001302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20262099025 + 47914084 = 142345^2 + 6922^2 .

It is a cyclic number.

It is not a de Polignac number, because 20310013109 - 2¹⁶ = 20309947573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20310013189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155006554 + 10155006555.

It is an arithmetic number, because the mean of its divisors is an integer number (10155006555).

Almost surely, 2^20310013109 is an apocalyptic number.

It is an amenable number.

20310013109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310013109 is an equidigital number, since it uses as much as digits as its factorization.

20310013109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The spelling of 20310013109 in words is "twenty billion, three hundred ten million, thirteen thousand, one hundred nine".