102630109 has 2 divisors, whose sum is σ = 102630110. Its totient is φ = 102630108.

The previous prime is 102630107. The next prime is 102630137. The reversal of 102630109 is 901036201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99400900 + 3229209 = 9970^2 + 1797^2 .

It is a cyclic number.

It is not a de Polignac number, because 102630109 - 2¹ = 102630107 is a prime.

Together with 102630107, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102630109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102630107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51315054 + 51315055.

It is an arithmetic number, because the mean of its divisors is an integer number (51315055).

Almost surely, 2^102630109 is an apocalyptic number.

It is an amenable number.

102630109 is a deficient number, since it is larger than the sum of its proper divisors (1).

102630109 is an equidigital number, since it uses as much as digits as its factorization.

102630109 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 square root of 102630109 is about 10130.6519533542. The cubic root of 102630109 is about 468.1930149012.

The spelling of 102630109 in words is "one hundred two million, six hundred thirty thousand, one hundred nine".