1330431056 has 20 divisors (see below), whose sum is σ = 2578564500. Its totient is φ = 664995072.

The previous prime is 1330431043. The next prime is 1330431071. The reversal of 1330431056 is 6501340331.

It can be written as a sum of positive squares in 2 ways, for example, as 298736656 + 1031694400 = 17284^2 + 32120^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43130 + ... + 67238.

It is an arithmetic number, because the mean of its divisors is an integer number (128928225).

Almost surely, 2^1330431056 is an apocalyptic number.

1330431056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1330431056 is a deficient number, since it is larger than the sum of its proper divisors (1248133444).

1330431056 is a wasteful number, since it uses less digits than its factorization.

1330431056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27566 (or 27560 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 1330431056 is about 36475.0744481763. The cubic root of 1330431056 is about 1099.8432437781.

Adding to 1330431056 its reverse (6501340331), we get a palindrome (7831771387).

The spelling of 1330431056 in words is "one billion, three hundred thirty million, four hundred thirty-one thousand, fifty-six".