117705730431 has 4 divisors (see below), whose sum is σ = 156940973912. Its totient is φ = 78470486952.

The previous prime is 117705730423. The next prime is 117705730507. The reversal of 117705730431 is 134037507711.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 117705730431 - 2³ = 117705730423 is a prime.

It is a super-2 number, since 2×117705730431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117705730431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117705730231) 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, 19617621736 + ... + 19617621741.

It is an arithmetic number, because the mean of its divisors is an integer number (39235243478).

Almost surely, 2^117705730431 is an apocalyptic number.

117705730431 is a deficient number, since it is larger than the sum of its proper divisors (39235243481).

117705730431 is an equidigital number, since it uses as much as digits as its factorization.

117705730431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39235243480.

The product of its (nonzero) digits is 61740, while the sum is 39.

The spelling of 117705730431 in words is "one hundred seventeen billion, seven hundred five million, seven hundred thirty thousand, four hundred thirty-one".