213887117 has 8 divisors (see below), whose sum is σ = 219705024. Its totient is φ = 208107648.

The previous prime is 213887111. The next prime is 213887129. The reversal of 213887117 is 711788312.

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 213887117 - 2¹⁰ = 213886093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213887111) 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, 1853 + ... + 20765.

It is an arithmetic number, because the mean of its divisors is an integer number (27463128).

Almost surely, 2^213887117 is an apocalyptic number.

It is an amenable number.

213887117 is a deficient number, since it is larger than the sum of its proper divisors (5817907).

213887117 is a wasteful number, since it uses less digits than its factorization.

213887117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19219.

The product of its digits is 18816, while the sum is 38.

The square root of 213887117 is about 14624.8800678843. The cubic root of 213887117 is about 598.0372129652.

The spelling of 213887117 in words is "two hundred thirteen million, eight hundred eighty-seven thousand, one hundred seventeen".