101103209 has 2 divisors, whose sum is σ = 101103210. Its totient is φ = 101103208.

The previous prime is 101103187. The next prime is 101103217. The reversal of 101103209 is 902301101.

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., 83905600 + 17197609 = 9160^2 + 4147^2 .

It is a cyclic number.

It is not a de Polignac number, because 101103209 - 2¹² = 101099113 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (101103229) 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, 50551604 + 50551605.

It is an arithmetic number, because the mean of its divisors is an integer number (50551605).

Almost surely, 2^101103209 is an apocalyptic number.

It is an amenable number.

101103209 is a deficient number, since it is larger than the sum of its proper divisors (1).

101103209 is an equidigital number, since it uses as much as digits as its factorization.

101103209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 101103209 is about 10055.0091496726. The cubic root of 101103209 is about 465.8595255883.

The spelling of 101103209 in words is "one hundred one million, one hundred three thousand, two hundred nine".