1020310309 has 2 divisors, whose sum is σ = 1020310310. Its totient is φ = 1020310308.

The previous prime is 1020310307. The next prime is 1020310363. The reversal of 1020310309 is 9030130201.

1020310309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1006285284 + 14025025 = 31722^2 + 3745^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020310309 - 2¹ = 1020310307 is a prime.

Together with 1020310307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020310307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510155154 + 510155155.

It is an arithmetic number, because the mean of its divisors is an integer number (510155155).

Almost surely, 2^1020310309 is an apocalyptic number.

It is an amenable number.

1020310309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020310309 is an equidigital number, since it uses as much as digits as its factorization.

1020310309 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 19.

The square root of 1020310309 is about 31942.2965517509. The cubic root of 1020310309 is about 1006.7247789769.

The spelling of 1020310309 in words is "one billion, twenty million, three hundred ten thousand, three hundred nine".