216103091 has 2 divisors, whose sum is σ = 216103092. Its totient is φ = 216103090.

The previous prime is 216103081. The next prime is 216103103. The reversal of 216103091 is 190301612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216103091 - 2¹⁴ = 216086707 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (216103001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108051545 + 108051546.

It is an arithmetic number, because the mean of its divisors is an integer number (108051546).

Almost surely, 2^216103091 is an apocalyptic number.

216103091 is a deficient number, since it is larger than the sum of its proper divisors (1).

216103091 is an equidigital number, since it uses as much as digits as its factorization.

216103091 is an odious number, because the sum of its binary digits is odd.

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

The square root of 216103091 is about 14700.4452653653. The cubic root of 216103091 is about 600.0954394477.

The spelling of 216103091 in words is "two hundred sixteen million, one hundred three thousand, ninety-one".