231322344 has 128 divisors (see below), whose sum is σ = 654151680. Its totient is φ = 67564800.

The previous prime is 231322319. The next prime is 231322363. The reversal of 231322344 is 443223132.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1277934 + ... + 1278114.

It is an arithmetic number, because the mean of its divisors is an integer number (5110560).

Almost surely, 2^231322344 is an apocalyptic number.

231322344 is a gapful number since it is divisible by the number (24) 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 231322344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327075840).

231322344 is an abundant number, since it is smaller than the sum of its proper divisors (422829336).

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

231322344 is a wasteful number, since it uses less digits than its factorization.

231322344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 347 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

The square root of 231322344 is about 15209.2847958081. The cubic root of 231322344 is about 613.8645133189.

Adding to 231322344 its reverse (443223132), we get a palindrome (674545476).

The spelling of 231322344 in words is "two hundred thirty-one million, three hundred twenty-two thousand, three hundred forty-four".