117031280 has 20 divisors (see below), whose sum is σ = 272097912. Its totient is φ = 46812480.

The previous prime is 117031273. The next prime is 117031283. The reversal of 117031280 is 82130711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 731366 + ... + 731525.

Almost surely, 2^117031280 is an apocalyptic number.

117031280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117031280 is an abundant number, since it is smaller than the sum of its proper divisors (155066632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117031280 is a wasteful number, since it uses less digits than its factorization.

117031280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462904 (or 1462898 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 117031280 is about 10818.0996482746. The cubic root of 117031280 is about 489.1409075601.

Adding to 117031280 its reverse (82130711), we get a palindrome (199161991).

The spelling of 117031280 in words is "one hundred seventeen million, thirty-one thousand, two hundred eighty".