117213 has 8 divisors (see below), whose sum is σ = 158400. Its totient is φ = 77088.

The previous prime is 117209. The next prime is 117223. The reversal of 117213 is 312711.

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

It is not a de Polignac number, because 117213 - 2² = 117209 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 117192 and 117201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48 + ... + 486.

It is an arithmetic number, because the mean of its divisors is an integer number (19800).

2¹¹⁷²¹³ is an apocalyptic number.

It is an amenable number.

117213 is a deficient number, since it is larger than the sum of its proper divisors (41187).

117213 is an equidigital number, since it uses as much as digits as its factorization.

117213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531.

The product of its digits is 42, while the sum is 15.

The square root of 117213 is about 342.3638415487. The cubic root of 117213 is about 48.9393947372.

Adding to 117213 its reverse (312711), we get a palindrome (429924).

The spelling of 117213 in words is "one hundred seventeen thousand, two hundred thirteen".