20103110309 has 2 divisors, whose sum is σ = 20103110310. Its totient is φ = 20103110308.

The previous prime is 20103110273. The next prime is 20103110311. The reversal of 20103110309 is 90301130102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11598213025 + 8504897284 = 107695^2 + 92222^2 .

It is a cyclic number.

It is not a de Polignac number, because 20103110309 - 2²⁴ = 20086333093 is a prime.

Together with 20103110311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20103110389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051555154 + 10051555155.

It is an arithmetic number, because the mean of its divisors is an integer number (10051555155).

Almost surely, 2^20103110309 is an apocalyptic number.

It is an amenable number.

20103110309 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103110309 is an equidigital number, since it uses as much as digits as its factorization.

20103110309 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 20103110309 in words is "twenty billion, one hundred three million, one hundred ten thousand, three hundred nine".