1311442048 has 64 divisors (see below), whose sum is σ = 3008934720. Its totient is φ = 557706240.

The previous prime is 1311442021. The next prime is 1311442049. The reversal of 1311442048 is 8402441131.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (1311442049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111790 + ... + 122962.

It is an arithmetic number, because the mean of its divisors is an integer number (47014605).

Almost surely, 2^1311442048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311442048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1504467360).

1311442048 is an abundant number, since it is smaller than the sum of its proper divisors (1697492672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311442048 is a wasteful number, since it uses less digits than its factorization.

1311442048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11325 (or 11313 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 1311442048 is about 36213.8377971736. The cubic root of 1311442048 is about 1094.5855267815.

Adding to 1311442048 its reverse (8402441131), we get a palindrome (9713883179).

The spelling of 1311442048 in words is "one billion, three hundred eleven million, four hundred forty-two thousand, forty-eight".