103405109 has 2 divisors, whose sum is σ = 103405110. Its totient is φ = 103405108.

The previous prime is 103405073. The next prime is 103405129. The reversal of 103405109 is 901504301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80604484 + 22800625 = 8978^2 + 4775^2 .

It is an emirp because it is prime and its reverse (901504301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103405109 - 2⁸ = 103404853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103405129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51702554 + 51702555.

It is an arithmetic number, because the mean of its divisors is an integer number (51702555).

Almost surely, 2^103405109 is an apocalyptic number.

It is an amenable number.

103405109 is a deficient number, since it is larger than the sum of its proper divisors (1).

103405109 is an equidigital number, since it uses as much as digits as its factorization.

103405109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 103405109 is about 10168.8302670465. The cubic root of 103405109 is about 469.3685635549.

The spelling of 103405109 in words is "one hundred three million, four hundred five thousand, one hundred nine".