216238371 has 8 divisors (see below), whose sum is σ = 288388800. Its totient is φ = 144123432.

The previous prime is 216238369. The next prime is 216238391. The reversal of 216238371 is 173832612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216238371 - 2¹ = 216238369 is a prime.

It is a super-3 number, since 3×216238371³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (216238301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13176 + ... + 24618.

It is an arithmetic number, because the mean of its divisors is an integer number (36048600).

Almost surely, 2^216238371 is an apocalyptic number.

216238371 is a deficient number, since it is larger than the sum of its proper divisors (72150429).

216238371 is a wasteful number, since it uses less digits than its factorization.

216238371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17745.

The product of its digits is 12096, while the sum is 33.

The square root of 216238371 is about 14705.0457666748. The cubic root of 216238371 is about 600.2206327476.

The spelling of 216238371 in words is "two hundred sixteen million, two hundred thirty-eight thousand, three hundred seventy-one".