1311421603224 has 32 divisors (see below), whose sum is σ = 3279493362240. Its totient is φ = 437015287200.

The previous prime is 1311421603207. The next prime is 1311421603229. The reversal of 1311421603224 is 4223061241131.

It is a junction number, because it is equal to n+sod(n) for n = 1311421603191 and 1311421603200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311421603229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7742422 + ... + 7909989.

It is an arithmetic number, because the mean of its divisors is an integer number (102484167570).

Almost surely, 2^{1311421603224} is an apocalyptic number.

It is an amenable number.

1311421603224 is an abundant number, since it is smaller than the sum of its proper divisors (1968071759016).

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

1311421603224 is a wasteful number, since it uses less digits than its factorization.

1311421603224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15655911 (or 15655907 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 1311421603224 its reverse (4223061241131), we get a palindrome (5534482844355).

The spelling of 1311421603224 in words is "one trillion, three hundred eleven billion, four hundred twenty-one million, six hundred three thousand, two hundred twenty-four".