13231444244 has 18 divisors (see below), whose sum is σ = 23451883434. Its totient is φ = 6531966480.

The previous prime is 13231444241. The next prime is 13231444321. The reversal of 13231444244 is 44244413231.

It can be written as a sum of positive squares in only one way, i.e., 12584352400 + 647091844 = 112180^2 + 25438^2 .

It is a super-2 number, since 2×13231444244² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13231444244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231444241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 240047 + ... + 289974.

It is an arithmetic number, because the mean of its divisors is an integer number (1302882413).

Almost surely, 2^13231444244 is an apocalyptic number.

It is an amenable number.

13231444244 is a deficient number, since it is larger than the sum of its proper divisors (10220439190).

13231444244 is an equidigital number, since it uses as much as digits as its factorization.

13231444244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530183 (or 530102 counting only the distinct ones).

The product of its digits is 36864, while the sum is 32.

Adding to 13231444244 its reverse (44244413231), we get a palindrome (57475857475).

The spelling of 13231444244 in words is "thirteen billion, two hundred thirty-one million, four hundred forty-four thousand, two hundred forty-four".