1440031312 has 10 divisors (see below), whose sum is σ = 2790060698. Its totient is φ = 720015648.

The previous prime is 1440031309. The next prime is 1440031319. The reversal of 1440031312 is 2131300441.

It can be written as a sum of positive squares in only one way, i.e., 879478336 + 560552976 = 29656^2 + 23676^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1440031312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440031319) by changing a digit.

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 as a sum of consecutive naturals, namely, 45000963 + ... + 45000994.

Almost surely, 2^1440031312 is an apocalyptic number.

It is an amenable number.

1440031312 is a deficient number, since it is larger than the sum of its proper divisors (1350029386).

1440031312 is an equidigital number, since it uses as much as digits as its factorization.

1440031312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90001965 (or 90001959 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1440031312 is about 37947.7444916032. The cubic root of 1440031312 is about 1129.2514195202.

Adding to 1440031312 its reverse (2131300441), we get a palindrome (3571331753).

The spelling of 1440031312 in words is "one billion, four hundred forty million, thirty-one thousand, three hundred twelve".