1311440552 has 16 divisors (see below), whose sum is σ = 2543742900. Its totient is φ = 633109120.

The previous prime is 1311440551. The next prime is 1311440573. The reversal of 1311440552 is 2550441131.

It can be written as a sum of positive squares in 2 ways, for example, as 1195361476 + 116079076 = 34574^2 + 10774^2 .

It is not an unprimeable number, because it can be changed into a prime (1311440551) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2826149 + ... + 2826612.

Almost surely, 2^1311440552 is an apocalyptic number.

It is an amenable number.

1311440552 is a deficient number, since it is larger than the sum of its proper divisors (1232302348).

1311440552 is a wasteful number, since it uses less digits than its factorization.

1311440552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652796 (or 5652792 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1311440552 is about 36213.8171420799. The cubic root of 1311440552 is about 1094.5851105728.

Adding to 1311440552 its reverse (2550441131), we get a palindrome (3861881683).

The spelling of 1311440552 in words is "one billion, three hundred eleven million, four hundred forty thousand, five hundred fifty-two".