117838211 has 4 divisors (see below), whose sum is σ = 118217424. Its totient is φ = 117459000.

The previous prime is 117838207. The next prime is 117838213. The reversal of 117838211 is 112838711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112838711 = 3557 ⋅31723.

It is a cyclic number.

It is not a de Polignac number, because 117838211 - 2² = 117838207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117838213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189140 + ... + 189761.

It is an arithmetic number, because the mean of its divisors is an integer number (29554356).

Almost surely, 2^117838211 is an apocalyptic number.

117838211 is a deficient number, since it is larger than the sum of its proper divisors (379213).

117838211 is an equidigital number, since it uses as much as digits as its factorization.

117838211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379212.

The product of its digits is 2688, while the sum is 32.

The square root of 117838211 is about 10855.3309944930. The cubic root of 117838211 is about 490.2625429080.

The spelling of 117838211 in words is "one hundred seventeen million, eight hundred thirty-eight thousand, two hundred eleven".