216003241 has 4 divisors (see below), whose sum is σ = 228709332. Its totient is φ = 203297152.

The previous prime is 216003197. The next prime is 216003247. The reversal of 216003241 is 142300612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 195888016 + 20115225 = 13996^2 + 4485^2 .

It is not a de Polignac number, because 216003241 - 2²¹ = 213906089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216003247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6353020 + ... + 6353053.

It is an arithmetic number, because the mean of its divisors is an integer number (57177333).

Almost surely, 2^216003241 is an apocalyptic number.

It is an amenable number.

216003241 is a deficient number, since it is larger than the sum of its proper divisors (12706091).

216003241 is a wasteful number, since it uses less digits than its factorization.

216003241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12706090.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 216003241 is about 14697.0487173446. The cubic root of 216003241 is about 600.0030009109.

Adding to 216003241 its reverse (142300612), we get a palindrome (358303853).

The spelling of 216003241 in words is "two hundred sixteen million, three thousand, two hundred forty-one".