1331324424 has 80 divisors (see below), whose sum is σ = 3748229100. Its totient is φ = 441479808.

The previous prime is 1331324381. The next prime is 1331324443. The reversal of 1331324424 is 4244231331.

1331324424 is a `hidden beast` number, since 1 + 331 + 324 + 4 + 2 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 824264100 + 507060324 = 28710^2 + 22518^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 122442 + ... + 132870.

Almost surely, 2^1331324424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331324424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1874114550).

1331324424 is an abundant number, since it is smaller than the sum of its proper divisors (2416904676).

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

1331324424 is a wasteful number, since it uses less digits than its factorization.

1331324424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10644 (or 10631 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 1331324424 is about 36487.3186737529. The cubic root of 1331324424 is about 1100.0893657423.

Adding to 1331324424 its reverse (4244231331), we get a palindrome (5575555755).

The spelling of 1331324424 in words is "one billion, three hundred thirty-one million, three hundred twenty-four thousand, four hundred twenty-four".