1331144452 has 12 divisors (see below), whose sum is σ = 2541275856. Its totient is φ = 605065640.

The previous prime is 1331144447. The next prime is 1331144467. The reversal of 1331144452 is 2544411331.

It is a self number, because there is not a number n which added to its sum of digits gives 1331144452.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15126598 + ... + 15126685.

It is an arithmetic number, because the mean of its divisors is an integer number (211772988).

Almost surely, 2^1331144452 is an apocalyptic number.

It is an amenable number.

1331144452 is a deficient number, since it is larger than the sum of its proper divisors (1210131404).

1331144452 is a wasteful number, since it uses less digits than its factorization.

1331144452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30253298 (or 30253296 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 1331144452 is about 36484.8523636865. The cubic root of 1331144452 is about 1100.0397924999.

Adding to 1331144452 its reverse (2544411331), we get a palindrome (3875555783).

The spelling of 1331144452 in words is "one billion, three hundred thirty-one million, one hundred forty-four thousand, four hundred fifty-two".