1331023312 has 10 divisors (see below), whose sum is σ = 2578857698. Its totient is φ = 665511648.

The previous prime is 1331023277. The next prime is 1331023327. The reversal of 1331023312 is 2133201331.

It can be written as a sum of positive squares in only one way, i.e., 1147583376 + 183439936 = 33876^2 + 13544^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1331023312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41594463 + ... + 41594494.

Almost surely, 2^1331023312 is an apocalyptic number.

It is an amenable number.

1331023312 is a deficient number, since it is larger than the sum of its proper divisors (1247834386).

1331023312 is an equidigital number, since it uses as much as digits as its factorization.

1331023312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83188965 (or 83188959 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1331023312 is about 36483.1921848952. The cubic root of 1331023312 is about 1100.0064220011.

Adding to 1331023312 its reverse (2133201331), we get a palindrome (3464224643).

The spelling of 1331023312 in words is "one billion, three hundred thirty-one million, twenty-three thousand, three hundred twelve".