1311320043224 has 16 divisors (see below), whose sum is σ = 2505116121120. Its totient is φ = 643289077600.

The previous prime is 1311320043221. The next prime is 1311320043259. The reversal of 1311320043224 is 4223400231131.

It is a junction number, because it is equal to n+sod(n) for n = 1311320043193 and 1311320043202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311320043221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1546367552 + ... + 1546368399.

It is an arithmetic number, because the mean of its divisors is an integer number (156569757570).

Almost surely, 2^{1311320043224} is an apocalyptic number.

It is an amenable number.

1311320043224 is a deficient number, since it is larger than the sum of its proper divisors (1193796077896).

1311320043224 is a wasteful number, since it uses less digits than its factorization.

1311320043224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3092736010 (or 3092736006 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1311320043224 its reverse (4223400231131), we get a palindrome (5534720274355).

The spelling of 1311320043224 in words is "one trillion, three hundred eleven billion, three hundred twenty million, forty-three thousand, two hundred twenty-four".