216383017 has 2 divisors, whose sum is σ = 216383018. Its totient is φ = 216383016.

The previous prime is 216382979. The next prime is 216383059. The reversal of 216383017 is 710383612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108555561 + 107827456 = 10419^2 + 10384^2 .

It is a cyclic number.

It is not a de Polignac number, because 216383017 - 2⁷ = 216382889 is a prime.

It is a super-2 number, since 2×216383017² = 93643220092044578, which contains 22 as substring.

It is a Chen prime.

It is equal to p_11934355 and since 216383017 and 11934355 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216383017.

It is not a weakly prime, because it can be changed into another prime (216383617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108191508 + 108191509.

It is an arithmetic number, because the mean of its divisors is an integer number (108191509).

Almost surely, 2^216383017 is an apocalyptic number.

It is an amenable number.

216383017 is a deficient number, since it is larger than the sum of its proper divisors (1).

216383017 is an equidigital number, since it uses as much as digits as its factorization.

216383017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 216383017 is about 14709.9631882612. The cubic root of 216383017 is about 600.3544359544.

The spelling of 216383017 in words is "two hundred sixteen million, three hundred eighty-three thousand, seventeen".