216103109 has 2 divisors, whose sum is σ = 216103110. Its totient is φ = 216103108.

The previous prime is 216103103. The next prime is 216103127. The reversal of 216103109 is 901301612.

It is a happy number.

216103109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163584100 + 52519009 = 12790^2 + 7247^2 .

It is a cyclic number.

It is not a de Polignac number, because 216103109 - 2¹⁶ = 216037573 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 (216103103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108051554 + 108051555.

It is an arithmetic number, because the mean of its divisors is an integer number (108051555).

Almost surely, 2^216103109 is an apocalyptic number.

It is an amenable number.

216103109 is a deficient number, since it is larger than the sum of its proper divisors (1).

216103109 is an equidigital number, since it uses as much as digits as its factorization.

216103109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 216103109 is about 14700.4458775916. The cubic root of 216103109 is about 600.0954561090.

The spelling of 216103109 in words is "two hundred sixteen million, one hundred three thousand, one hundred nine".