217293133 has 8 divisors (see below), whose sum is σ = 230326848. Its totient is φ = 204287424.

The previous prime is 217293113. The next prime is 217293137. The reversal of 217293133 is 331392712.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 217293133 - 2¹³ = 217284941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 217293095 and 217293104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217293137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10210 + ... + 23212.

It is an arithmetic number, because the mean of its divisors is an integer number (28790856).

Almost surely, 2^217293133 is an apocalyptic number.

It is an amenable number.

217293133 is a deficient number, since it is larger than the sum of its proper divisors (13033715).

217293133 is a wasteful number, since it uses less digits than its factorization.

217293133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14003.

The product of its digits is 6804, while the sum is 31.

The square root of 217293133 is about 14740.8660871741. The cubic root of 217293133 is about 601.1949638926.

The spelling of 217293133 in words is "two hundred seventeen million, two hundred ninety-three thousand, one hundred thirty-three".