117031281 has 8 divisors (see below), whose sum is σ = 165220704. Its totient is φ = 73431360.

The previous prime is 117031273. The next prime is 117031283. The reversal of 117031281 is 182130711.

It is a happy number.

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

It is not a de Polignac number, because 117031281 - 2³ = 117031273 is a prime.

It is a super-2 number, since 2×117031281² = 27392641465001922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117031283) 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, 1147315 + ... + 1147416.

It is an arithmetic number, because the mean of its divisors is an integer number (20652588).

Almost surely, 2^117031281 is an apocalyptic number.

It is an amenable number.

117031281 is a deficient number, since it is larger than the sum of its proper divisors (48189423).

117031281 is a wasteful number, since it uses less digits than its factorization.

117031281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294751.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 117031281 is about 10818.0996944935. The cubic root of 117031281 is about 489.1409089532.

Adding to 117031281 its reverse (182130711), we get a palindrome (299161992).

The spelling of 117031281 in words is "one hundred seventeen million, thirty-one thousand, two hundred eighty-one".