1311440140144 has 40 divisors (see below), whose sum is σ = 2723049061920. Its totient is φ = 610258860288.

The previous prime is 1311440140133. The next prime is 1311440140159. The reversal of 1311440140144 is 4410410441131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48144439 + ... + 48171670.

It is an arithmetic number, because the mean of its divisors is an integer number (68076226548).

Almost surely, 2^{1311440140144} is an apocalyptic number.

It is an amenable number.

1311440140144 is an abundant number, since it is smaller than the sum of its proper divisors (1411608921776).

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

1311440140144 is a wasteful number, since it uses less digits than its factorization.

1311440140144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96316177 (or 96316171 counting only the distinct ones).

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

Adding to 1311440140144 its reverse (4410410441131), we get a palindrome (5721850581275).

The spelling of 1311440140144 in words is "one trillion, three hundred eleven billion, four hundred forty million, one hundred forty thousand, one hundred forty-four".