216485319 has 32 divisors (see below), whose sum is σ = 306685440. Its totient is φ = 135632000.

The previous prime is 216485317. The next prime is 216485329. The reversal of 216485319 is 913584612.

It is a cyclic number.

It is not a de Polignac number, because 216485319 - 2¹ = 216485317 is a prime.

It is a super-3 number, since 3×216485319³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216485317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 623704 + ... + 624050.

It is an arithmetic number, because the mean of its divisors is an integer number (9583920).

Almost surely, 2^216485319 is an apocalyptic number.

216485319 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

216485319 is a deficient number, since it is larger than the sum of its proper divisors (90200121).

216485319 is a wasteful number, since it uses less digits than its factorization.

216485319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551.

The product of its digits is 51840, while the sum is 39.

The square root of 216485319 is about 14713.4400804163. The cubic root of 216485319 is about 600.4490333091.

The spelling of 216485319 in words is "two hundred sixteen million, four hundred eighty-five thousand, three hundred nineteen".