1311043144 has 16 divisors (see below), whose sum is σ = 2459097900. Its totient is φ = 655283712.

The previous prime is 1311043117. The next prime is 1311043169. The reversal of 1311043144 is 4413401131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1301044900 + 9998244 = 36070^2 + 3162^2 .

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, 5109 + ... + 51460.

Almost surely, 2^1311043144 is an apocalyptic number.

It is an amenable number.

1311043144 is a deficient number, since it is larger than the sum of its proper divisors (1148054756).

1311043144 is a wasteful number, since it uses less digits than its factorization.

1311043144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59472 (or 59468 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1311043144 is about 36208.3297598771. The cubic root of 1311043144 is about 1094.4745347571.

Adding to 1311043144 its reverse (4413401131), we get a palindrome (5724444275).

The spelling of 1311043144 in words is "one billion, three hundred eleven million, forty-three thousand, one hundred forty-four".