213752217 has 8 divisors (see below), whose sum is σ = 325717696. Its totient is φ = 122144112.

The previous prime is 213752213. The next prime is 213752239. The reversal of 213752217 is 712257312.

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

It is not a de Polignac number, because 213752217 - 2² = 213752213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213752213) 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, 5089318 + ... + 5089359.

It is an arithmetic number, because the mean of its divisors is an integer number (40714712).

Almost surely, 2^213752217 is an apocalyptic number.

It is an amenable number.

213752217 is a deficient number, since it is larger than the sum of its proper divisors (111965479).

213752217 is a wasteful number, since it uses less digits than its factorization.

213752217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10178687.

The product of its digits is 5880, while the sum is 30.

The square root of 213752217 is about 14620.2673368171. The cubic root of 213752217 is about 597.9114578661.

The spelling of 213752217 in words is "two hundred thirteen million, seven hundred fifty-two thousand, two hundred seventeen".