117238109 has 2 divisors, whose sum is σ = 117238110. Its totient is φ = 117238108.

The previous prime is 117238091. The next prime is 117238129. The reversal of 117238109 is 901832711.

Together with previous prime (117238091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70930084 + 46308025 = 8422^2 + 6805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117238109 is a prime.

It is a super-4 number, since 4×117238109⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117238129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58619054 + 58619055.

It is an arithmetic number, because the mean of its divisors is an integer number (58619055).

Almost surely, 2^117238109 is an apocalyptic number.

It is an amenable number.

117238109 is a deficient number, since it is larger than the sum of its proper divisors (1).

117238109 is an equidigital number, since it uses as much as digits as its factorization.

117238109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 117238109 is about 10827.6548245684. The cubic root of 117238109 is about 489.4288903539.

The spelling of 117238109 in words is "one hundred seventeen million, two hundred thirty-eight thousand, one hundred nine".