1311223241244 has 24 divisors (see below), whose sum is σ = 3496595310208. Its totient is φ = 374635211760.

The previous prime is 1311223241233. The next prime is 1311223241261. The reversal of 1311223241244 is 4421423221131.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7804900162 + ... + 7804900329.

Almost surely, 2^{1311223241244} is an apocalyptic number.

1311223241244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1311223241244 is an abundant number, since it is smaller than the sum of its proper divisors (2185372068964).

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

1311223241244 is a wasteful number, since it uses less digits than its factorization.

1311223241244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15609800505 (or 15609800503 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

Adding to 1311223241244 its reverse (4421423221131), we get a palindrome (5732646462375).

The spelling of 1311223241244 in words is "one trillion, three hundred eleven billion, two hundred twenty-three million, two hundred forty-one thousand, two hundred forty-four".