102388339309 has 2 divisors, whose sum is σ = 102388339310. Its totient is φ = 102388339308.

The previous prime is 102388339307. The next prime is 102388339337. The reversal of 102388339309 is 903933883201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59631198025 + 42757141284 = 244195^2 + 206778^2 .

It is a cyclic number.

It is not a de Polignac number, because 102388339309 - 2¹ = 102388339307 is a prime.

Together with 102388339307, 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 (102388339303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51194169654 + 51194169655.

It is an arithmetic number, because the mean of its divisors is an integer number (51194169655).

Almost surely, 2^102388339309 is an apocalyptic number.

It is an amenable number.

102388339309 is a deficient number, since it is larger than the sum of its proper divisors (1).

102388339309 is an equidigital number, since it uses as much as digits as its factorization.

102388339309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 49.

The spelling of 102388339309 in words is "one hundred two billion, three hundred eighty-eight million, three hundred thirty-nine thousand, three hundred nine".