1231231344 has 80 divisors (see below), whose sum is σ = 3649147392. Its totient is φ = 350417664.

The previous prime is 1231231327. The next prime is 1231231349. The reversal of 1231231344 is 4431321321.

It is a happy number.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231231349) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 81402 + ... + 95334.

Almost surely, 2^1231231344 is an apocalyptic number.

1231231344 is a gapful number since it is divisible by the number (14) 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 1231231344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1824573696).

1231231344 is an abundant number, since it is smaller than the sum of its proper divisors (2417916048).

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

1231231344 is a wasteful number, since it uses less digits than its factorization.

1231231344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14214 (or 14208 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 1231231344 is about 35088.9062810456. The cubic root of 1231231344 is about 1071.7986877862.

Adding to 1231231344 its reverse (4431321321), we get a palindrome (5662552665).

The spelling of 1231231344 in words is "one billion, two hundred thirty-one million, two hundred thirty-one thousand, three hundred forty-four".