1331321431224 has 64 divisors (see below), whose sum is σ = 3486526467840. Its totient is φ = 422827581440.

The previous prime is 1331321431213. The next prime is 1331321431283. The reversal of 1331321431224 is 4221341231331.

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

It is a junction number, because it is equal to n+sod(n) for n = 1331321431191 and 1331321431200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4550382 + ... + 4834109.

It is an arithmetic number, because the mean of its divisors is an integer number (54476976060).

Almost surely, 2^{1331321431224} is an apocalyptic number.

It is an amenable number.

1331321431224 is an abundant number, since it is smaller than the sum of its proper divisors (2155205036616).

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

1331321431224 is a wasteful number, since it uses less digits than its factorization.

1331321431224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9384780 (or 9384776 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

Adding to 1331321431224 its reverse (4221341231331), we get a palindrome (5552662662555).

The spelling of 1331321431224 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-one million, four hundred thirty-one thousand, two hundred twenty-four".