1311240441142 has 16 divisors (see below), whose sum is σ = 1968255780192. Its totient is φ = 655155293760.

The previous prime is 1311240441131. The next prime is 1311240441167. The reversal of 1311240441142 is 2411440421131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1311240441142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28066042 + ... + 28112722.

It is an arithmetic number, because the mean of its divisors is an integer number (123015986262).

Almost surely, 2^{1311240441142} is an apocalyptic number.

1311240441142 is a deficient number, since it is larger than the sum of its proper divisors (657015339050).

1311240441142 is a wasteful number, since it uses less digits than its factorization.

1311240441142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56343.

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

Adding to 1311240441142 its reverse (2411440421131), we get a palindrome (3722680862273).

The spelling of 1311240441142 in words is "one trillion, three hundred eleven billion, two hundred forty million, four hundred forty-one thousand, one hundred forty-two".