117431161 has 8 divisors (see below), whose sum is σ = 119635200. Its totient is φ = 115236240.

The previous prime is 117431159. The next prime is 117431173. The reversal of 117431161 is 161134711.

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 117431161 - 2¹ = 117431159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117431141) 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, 27210 + ... + 31228.

It is an arithmetic number, because the mean of its divisors is an integer number (14954400).

Almost surely, 2^117431161 is an apocalyptic number.

It is an amenable number.

117431161 is a deficient number, since it is larger than the sum of its proper divisors (2204039).

117431161 is an equidigital number, since it uses as much as digits as its factorization.

117431161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4559.

The product of its digits is 504, while the sum is 25.

The square root of 117431161 is about 10836.5659228374. The cubic root of 117431161 is about 489.6973849941.

Adding to 117431161 its reverse (161134711), we get a palindrome (278565872).

The spelling of 117431161 in words is "one hundred seventeen million, four hundred thirty-one thousand, one hundred sixty-one".