1331321224 has 16 divisors (see below), whose sum is σ = 2497219020. Its totient is φ = 665396160.

The previous prime is 1331321207. The next prime is 1331321231. The reversal of 1331321224 is 4221231331.

It can be written as a sum of positive squares in 2 ways, for example, as 1309137124 + 22184100 = 36182^2 + 4710^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1331321195 and 1331321204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10779 + ... + 52714.

Almost surely, 2^1331321224 is an apocalyptic number.

It is an amenable number.

1331321224 is a deficient number, since it is larger than the sum of its proper divisors (1165897796).

1331321224 is a wasteful number, since it uses less digits than its factorization.

1331321224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66120 (or 66116 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 1331321224 is about 36487.2748228749. The cubic root of 1331321224 is about 1100.0884843422.

Adding to 1331321224 its reverse (4221231331), we get a palindrome (5552552555).

The spelling of 1331321224 in words is "one billion, three hundred thirty-one million, three hundred twenty-one thousand, two hundred twenty-four".