117231912 has 192 divisors, whose sum is σ = 381888000. Its totient is φ = 32457600.

The previous prime is 117231899. The next prime is 117231913. The reversal of 117231912 is 219132711.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (117231913) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1160662 + ... + 1160762.

It is an arithmetic number, because the mean of its divisors is an integer number (1989000).

Almost surely, 2^117231912 is an apocalyptic number.

117231912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117231912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190944000).

117231912 is an abundant number, since it is smaller than the sum of its proper divisors (264656088).

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

117231912 is a wasteful number, since it uses less digits than its factorization.

117231912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 160 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 117231912 is about 10827.3686554028. The cubic root of 117231912 is about 489.4202667522.

The spelling of 117231912 in words is "one hundred seventeen million, two hundred thirty-one thousand, nine hundred twelve".