13311212344240 has 80 divisors (see below), whose sum is σ = 31609020643200. Its totient is φ = 5210872934400.

The previous prime is 13311212344219. The next prime is 13311212344247. The reversal of 13311212344240 is 4244321211331.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×13311212344240² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13311212344247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65326036 + ... + 65529484.

It is an arithmetic number, because the mean of its divisors is an integer number (395112758040).

Almost surely, 2^{13311212344240} is an apocalyptic number.

13311212344240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13311212344240 is an abundant number, since it is smaller than the sum of its proper divisors (18297808298960).

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

13311212344240 is a wasteful number, since it uses less digits than its factorization.

13311212344240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220910 (or 220904 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 13311212344240 its reverse (4244321211331), we get a palindrome (17555533555571).

The spelling of 13311212344240 in words is "thirteen trillion, three hundred eleven billion, two hundred twelve million, three hundred forty-four thousand, two hundred forty".