13531343444 has 12 divisors (see below), whose sum is σ = 23783258100. Its totient is φ = 6736126848.

The previous prime is 13531343431. The next prime is 13531343461. The reversal of 13531343444 is 44434313531.

13531343444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11685610000 + 1845733444 = 108100^2 + 42962^2 .

It is a super-2 number, since 2×13531343444² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7385189 + ... + 7387020.

It is an arithmetic number, because the mean of its divisors is an integer number (1981938175).

Almost surely, 2^13531343444 is an apocalyptic number.

It is an amenable number.

13531343444 is a deficient number, since it is larger than the sum of its proper divisors (10251914656).

13531343444 is a wasteful number, since it uses less digits than its factorization.

13531343444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14772442 (or 14772440 counting only the distinct ones).

The product of its digits is 103680, while the sum is 35.

Adding to 13531343444 its reverse (44434313531), we get a palindrome (57965656975).

The spelling of 13531343444 in words is "thirteen billion, five hundred thirty-one million, three hundred forty-three thousand, four hundred forty-four".