117431071 has 4 divisors (see below), whose sum is σ = 117452752. Its totient is φ = 117409392.

The previous prime is 117431059. The next prime is 117431099. The reversal of 117431071 is 170134711.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 170134711 = 193 ⋅881527.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117431071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117431371) 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, 5011 + ... + 16123.

It is an arithmetic number, because the mean of its divisors is an integer number (29363188).

Almost surely, 2^117431071 is an apocalyptic number.

117431071 is a deficient number, since it is larger than the sum of its proper divisors (21681).

117431071 is a wasteful number, since it uses less digits than its factorization.

117431071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21680.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 117431071 is about 10836.5617702295. The cubic root of 117431071 is about 489.6972598916.

Adding to 117431071 its reverse (170134711), we get a palindrome (287565782).

The spelling of 117431071 in words is "one hundred seventeen million, four hundred thirty-one thousand, seventy-one".