231199984 has 40 divisors (see below), whose sum is σ = 473719680. Its totient is φ = 109132800.

The previous prime is 231199981. The next prime is 231199987. The reversal of 231199984 is 489991132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231199981) and next prime (231199987).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231199981) 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, 14652 + ... + 26020.

It is an arithmetic number, because the mean of its divisors is an integer number (11842992).

Almost surely, 2^231199984 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 231199984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236859840).

231199984 is an abundant number, since it is smaller than the sum of its proper divisors (242519696).

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

231199984 is a wasteful number, since it uses less digits than its factorization.

231199984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11449 (or 11443 counting only the distinct ones).

The product of its digits is 139968, while the sum is 46.

The square root of 231199984 is about 15205.2617208649. The cubic root of 231199984 is about 613.7562578744.

The spelling of 231199984 in words is "two hundred thirty-one million, one hundred ninety-nine thousand, nine hundred eighty-four".