231393344 has 112 divisors (see below), whose sum is σ = 574535808. Its totient is φ = 90021888.

The previous prime is 231393329. The next prime is 231393353. The reversal of 231393344 is 443393132.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 231393344.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389912 + ... + 390504.

It is an arithmetic number, because the mean of its divisors is an integer number (5129784).

Almost surely, 2^231393344 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 231393344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287267904).

231393344 is an abundant number, since it is smaller than the sum of its proper divisors (343142464).

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

231393344 is a wasteful number, since it uses less digits than its factorization.

231393344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 682 counting only the distinct ones).

The product of its digits is 23328, while the sum is 32.

The square root of 231393344 is about 15211.6187172832. The cubic root of 231393344 is about 613.9273115789.

The spelling of 231393344 in words is "two hundred thirty-one million, three hundred ninety-three thousand, three hundred forty-four".