102311020309 has 2 divisors, whose sum is σ = 102311020310. Its totient is φ = 102311020308.

The previous prime is 102311020297. The next prime is 102311020349. The reversal of 102311020309 is 903020113201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85091807025 + 17219213284 = 291705^2 + 131222^2 .

It is a cyclic number.

It is not a de Polignac number, because 102311020309 - 2⁷ = 102311020181 is a prime.

It is a super-3 number, since 3×102311020309³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 102311020309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102311020349) 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, 51155510154 + 51155510155.

It is an arithmetic number, because the mean of its divisors is an integer number (51155510155).

Almost surely, 2^102311020309 is an apocalyptic number.

It is an amenable number.

102311020309 is a deficient number, since it is larger than the sum of its proper divisors (1).

102311020309 is an equidigital number, since it uses as much as digits as its factorization.

102311020309 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 22.

The spelling of 102311020309 in words is "one hundred two billion, three hundred eleven million, twenty thousand, three hundred nine".