1331440512 has 32 divisors (see below), whose sum is σ = 3536639880. Its totient is φ = 443813376.

The previous prime is 1331440511. The next prime is 1331440531. The reversal of 1331440512 is 2150441331.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331440511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1733263 + ... + 1734030.

Almost surely, 2^1331440512 is an apocalyptic number.

1331440512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1331440512 is an abundant number, since it is smaller than the sum of its proper divisors (2205199368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331440512 is an equidigital number, since it uses as much as digits as its factorization.

1331440512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467310 (or 3467298 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1331440512 is about 36488.9094383485. The cubic root of 1331440512 is about 1100.1213397827.

Adding to 1331440512 its reverse (2150441331), we get a palindrome (3481881843).

The spelling of 1331440512 in words is "one billion, three hundred thirty-one million, four hundred forty thousand, five hundred twelve".