216355103 has 2 divisors, whose sum is σ = 216355104. Its totient is φ = 216355102.

The previous prime is 216355091. The next prime is 216355121. The reversal of 216355103 is 301553612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216355103 - 2¹⁸ = 216092959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216355903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108177551 + 108177552.

It is an arithmetic number, because the mean of its divisors is an integer number (108177552).

Almost surely, 2^216355103 is an apocalyptic number.

216355103 is a deficient number, since it is larger than the sum of its proper divisors (1).

216355103 is an equidigital number, since it uses as much as digits as its factorization.

216355103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 216355103 is about 14709.0143449519. The cubic root of 216355103 is about 600.3286190571.

The spelling of 216355103 in words is "two hundred sixteen million, three hundred fifty-five thousand, one hundred three".