216342601 has 2 divisors, whose sum is σ = 216342602. Its totient is φ = 216342600.

The previous prime is 216342587. The next prime is 216342617. The reversal of 216342601 is 106243612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115541001 + 100801600 = 10749^2 + 10040^2 .

It is a cyclic number.

It is not a de Polignac number, because 216342601 - 2⁷ = 216342473 is a prime.

It is not a weakly prime, because it can be changed into another prime (216342631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108171300 + 108171301.

It is an arithmetic number, because the mean of its divisors is an integer number (108171301).

Almost surely, 2^216342601 is an apocalyptic number.

It is an amenable number.

216342601 is a deficient number, since it is larger than the sum of its proper divisors (1).

216342601 is an equidigital number, since it uses as much as digits as its factorization.

216342601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 216342601 is about 14708.5893613222. The cubic root of 216342601 is about 600.3170555782.

The spelling of 216342601 in words is "two hundred sixteen million, three hundred forty-two thousand, six hundred one".