117847131 has 8 divisors (see below), whose sum is σ = 159792960. Its totient is φ = 77233032.

The previous prime is 117847123. The next prime is 117847153. The reversal of 117847131 is 131748711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117847131 - 2³ = 117847123 is a prime.

It is a super-2 number, since 2×117847131² = 27775892569862322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 117847092 and 117847101.

It is not an unprimeable number, because it can be changed into a prime (117847031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332725 + ... + 333078.

It is an arithmetic number, because the mean of its divisors is an integer number (19974120).

Almost surely, 2^117847131 is an apocalyptic number.

117847131 is a deficient number, since it is larger than the sum of its proper divisors (41945829).

117847131 is an equidigital number, since it uses as much as digits as its factorization.

117847131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665865.

The product of its digits is 4704, while the sum is 33.

The square root of 117847131 is about 10855.7418447566. The cubic root of 117847131 is about 490.2749130650.

It can be divided in two parts, 11784 and 7131, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 117847131 in words is "one hundred seventeen million, eight hundred forty-seven thousand, one hundred thirty-one".