231198912 has 168 divisors, whose sum is σ = 802148256. Its totient is φ = 62152704.

The previous prime is 231198901. The next prime is 231198923. The reversal of 231198912 is 219891132.

It is an interprime number because it is at equal distance from previous prime (231198901) and next prime (231198923).

It is a tau number, because it is divible by the number of its divisors (168).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 66858 + ... + 70230.

It is an arithmetic number, because the mean of its divisors is an integer number (4774692).

Almost surely, 2^231198912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231198912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401074128).

231198912 is an abundant number, since it is smaller than the sum of its proper divisors (570949344).

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

231198912 is a wasteful number, since it uses less digits than its factorization.

231198912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415 (or 3402 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 231198912 is about 15205.2264698688. The cubic root of 231198912 is about 613.7553092761.

The spelling of 231198912 in words is "two hundred thirty-one million, one hundred ninety-eight thousand, nine hundred twelve".