1321130330 has 32 divisors (see below), whose sum is σ = 2562915600. Its totient is φ = 487429632.

The previous prime is 1321130309. The next prime is 1321130341. The reversal of 1321130330 is 330311231.

It can be written as a sum of positive squares in 8 ways, for example, as 191296561 + 1129833769 = 13831^2 + 33613^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1321130299 and 1321130308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213926 + ... + 220014.

Almost surely, 2^1321130330 is an apocalyptic number.

1321130330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321130330 is a deficient number, since it is larger than the sum of its proper divisors (1241785270).

1321130330 is a wasteful number, since it uses less digits than its factorization.

1321130330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7778.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1321130330 is about 36347.3565751349. The cubic root of 1321130330 is about 1097.2743343565.

Adding to 1321130330 its reverse (330311231), we get a palindrome (1651441561).

The spelling of 1321130330 in words is "one billion, three hundred twenty-one million, one hundred thirty thousand, three hundred thirty".