104111309 has 2 divisors, whose sum is σ = 104111310. Its totient is φ = 104111308.

The previous prime is 104111297. The next prime is 104111311. The reversal of 104111309 is 903111401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57912100 + 46199209 = 7610^2 + 6797^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104111309 is a prime.

Together with 104111311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104111509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52055654 + 52055655.

It is an arithmetic number, because the mean of its divisors is an integer number (52055655).

Almost surely, 2^104111309 is an apocalyptic number.

It is an amenable number.

104111309 is a deficient number, since it is larger than the sum of its proper divisors (1).

104111309 is an equidigital number, since it uses as much as digits as its factorization.

104111309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 104111309 is about 10203.4949404604. The cubic root of 104111309 is about 470.4346499771.

The spelling of 104111309 in words is "one hundred four million, one hundred eleven thousand, three hundred nine".