231993344 has 104 divisors (see below), whose sum is σ = 534708480. Its totient is φ = 99532800.

The previous prime is 231993283. The next prime is 231993371. The reversal of 231993344 is 443399132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 231993298 and 231993307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 855929 + ... + 856199.

Almost surely, 2^231993344 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 231993344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267354240).

231993344 is an abundant number, since it is smaller than the sum of its proper divisors (302715136).

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

231993344 is a wasteful number, since it uses less digits than its factorization.

231993344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 303 counting only the distinct ones).

The product of its digits is 69984, while the sum is 38.

The square root of 231993344 is about 15231.3277162564. The cubic root of 231993344 is about 614.4574888336.

The spelling of 231993344 in words is "two hundred thirty-one million, nine hundred ninety-three thousand, three hundred forty-four".