1331330330 has 24 divisors (see below), whose sum is σ = 2634055956. Its totient is φ = 484119680.

The previous prime is 1331330303. The next prime is 1331330359. The reversal of 1331330330 is 330331331.

It can be written as a sum of positive squares in 2 ways, for example, as 1238265721 + 93064609 = 35189^2 + 9647^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 548927 + ... + 551346.

Almost surely, 2^1331330330 is an apocalyptic number.

1331330330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331330330 is a deficient number, since it is larger than the sum of its proper divisors (1302725626).

1331330330 is a wasteful number, since it uses less digits than its factorization.

1331330330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100302 (or 1100291 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 20.

The square root of 1331330330 is about 36487.3996058913. The cubic root of 1331330330 is about 1100.0909924729.

Adding to 1331330330 its reverse (330331331), we get a palindrome (1661661661).

The spelling of 1331330330 in words is "one billion, three hundred thirty-one million, three hundred thirty thousand, three hundred thirty".