117681012 has 42 divisors (see below), whose sum is σ = 308779058. Its totient is φ = 39226032.

The previous prime is 117680993. The next prime is 117681013. The reversal of 117681012 is 210186711.

It can be written as a sum of positive squares in only one way, i.e., 69155856 + 48525156 = 8316^2 + 6966^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117681013) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 17263 + ... + 23094.

Almost surely, 2^117681012 is an apocalyptic number.

117681012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117681012 is an abundant number, since it is smaller than the sum of its proper divisors (191098046).

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

117681012 is an equidigital number, since it uses as much as digits as its factorization.

117681012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40379 (or 40362 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

The square root of 117681012 is about 10848.0879421214. The cubic root of 117681012 is about 490.0444385631.

The spelling of 117681012 in words is "one hundred seventeen million, six hundred eighty-one thousand, twelve".