20102303009 has 2 divisors, whose sum is σ = 20102303010. Its totient is φ = 20102303008.

The previous prime is 20102302999. The next prime is 20102303029. The reversal of 20102303009 is 90030320102.

It is an a-pointer prime, because the next prime (20102303029) can be obtained adding 20102303009 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18217440784 + 1884862225 = 134972^2 + 43415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20102303009 is a prime.

It is not a weakly prime, because it can be changed into another prime (20102303029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051151504 + 10051151505.

It is an arithmetic number, because the mean of its divisors is an integer number (10051151505).

Almost surely, 2^20102303009 is an apocalyptic number.

It is an amenable number.

20102303009 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102303009 is an equidigital number, since it uses as much as digits as its factorization.

20102303009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

The spelling of 20102303009 in words is "twenty billion, one hundred two million, three hundred three thousand, nine".