1311052144 has 10 divisors (see below), whose sum is σ = 2540163560. Its totient is φ = 655526064.

The previous prime is 1311052129. The next prime is 1311052153. The reversal of 1311052144 is 4412501131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40970364 + ... + 40970395.

It is an arithmetic number, because the mean of its divisors is an integer number (254016356).

Almost surely, 2^1311052144 is an apocalyptic number.

It is an amenable number.

1311052144 is a deficient number, since it is larger than the sum of its proper divisors (1229111416).

1311052144 is an equidigital number, since it uses as much as digits as its factorization.

1311052144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81940767 (or 81940761 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1311052144 is about 36208.4540404586. The cubic root of 1311052144 is about 1094.4770391874.

Adding to 1311052144 its reverse (4412501131), we get a palindrome (5723553275).

The spelling of 1311052144 in words is "one billion, three hundred eleven million, fifty-two thousand, one hundred forty-four".