217152316 has 6 divisors (see below), whose sum is σ = 380016560. Its totient is φ = 108576156.

The previous prime is 217152259. The next prime is 217152317. The reversal of 217152316 is 613251712.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217152317) 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 as a sum of consecutive naturals, namely, 27144036 + ... + 27144043.

Almost surely, 2^217152316 is an apocalyptic number.

It is an amenable number.

217152316 is a deficient number, since it is larger than the sum of its proper divisors (162864244).

217152316 is a wasteful number, since it uses less digits than its factorization.

217152316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54288083 (or 54288081 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 217152316 is about 14736.0888976689. The cubic root of 217152316 is about 601.0650675259.

The spelling of 217152316 in words is "two hundred seventeen million, one hundred fifty-two thousand, three hundred sixteen".