1311444041200 has 60 divisors (see below), whose sum is σ = 3151677264120. Its totient is φ = 524422286080.

The previous prime is 1311444041183. The next prime is 1311444041203. The reversal of 1311444041200 is 21404441131.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311444041203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 871887 + ... + 1839313.

It is an arithmetic number, because the mean of its divisors is an integer number (52527954402).

Almost surely, 2^{1311444041200} is an apocalyptic number.

1311444041200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311444041200 is an abundant number, since it is smaller than the sum of its proper divisors (1840233222920).

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

1311444041200 is a wasteful number, since it uses less digits than its factorization.

1311444041200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970834 (or 970823 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1311444041200 its reverse (21404441131), we get a palindrome (1332848482331).

The spelling of 1311444041200 in words is "one trillion, three hundred eleven billion, four hundred forty-four million, forty-one thousand, two hundred".