117423281 has 4 divisors (see below), whose sum is σ = 117691200. Its totient is φ = 117155364.

The previous prime is 117423277. The next prime is 117423289. The reversal of 117423281 is 182324711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 117423281 - 2² = 117423277 is a prime.

It is a super-2 number, since 2×117423281² = 27576453841609922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117423289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133301 + ... + 134178.

It is an arithmetic number, because the mean of its divisors is an integer number (29422800).

Almost surely, 2^117423281 is an apocalyptic number.

It is an amenable number.

117423281 is a deficient number, since it is larger than the sum of its proper divisors (267919).

117423281 is an equidigital number, since it uses as much as digits as its factorization.

117423281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267918.

The product of its digits is 2688, while the sum is 29.

The square root of 117423281 is about 10836.2023329209. The cubic root of 117423281 is about 489.6864313378.

Adding to 117423281 its reverse (182324711), we get a palindrome (299747992).

The spelling of 117423281 in words is "one hundred seventeen million, four hundred twenty-three thousand, two hundred eighty-one".