1311449344 has 18 divisors (see below), whose sum is σ = 2617776350. Its totient is φ = 655724544.

The previous prime is 1311449341. The next prime is 1311449387. The reversal of 1311449344 is 4439441131.

It can be written as a sum of positive squares in only one way, i.e., 1231167744 + 80281600 = 35088^2 + 8960^2 .

It is not an unprimeable number, because it can be changed into a prime (1311449341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2561169 + ... + 2561680.

Almost surely, 2^1311449344 is an apocalyptic number.

It is an amenable number.

1311449344 is a deficient number, since it is larger than the sum of its proper divisors (1306327006).

1311449344 is an frugal number, since it uses more digits than its factorization.

1311449344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5122865 (or 5122851 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 1311449344 is about 36213.9385320073. The cubic root of 1311449344 is about 1094.5875566287.

The spelling of 1311449344 in words is "one billion, three hundred eleven million, four hundred forty-nine thousand, three hundred forty-four".