1311443541342 has 96 divisors (see below), whose sum is σ = 3284517431520. Its totient is φ = 373756508160.

The previous prime is 1311443541341. The next prime is 1311443541371. The reversal of 1311443541342 is 2431453441131.

1311443541342 is a `hidden beast` number, since 1 + 31 + 1 + 4 + 43 + 541 + 3 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1311443541297 and 1311443541306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311443541341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4479634 + ... + 4763402.

It is an arithmetic number, because the mean of its divisors is an integer number (34213723245).

Almost surely, 2^{1311443541342} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311443541342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1642258715760).

1311443541342 is an abundant number, since it is smaller than the sum of its proper divisors (1973073890178).

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

1311443541342 is a wasteful number, since it uses less digits than its factorization.

1311443541342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285178 (or 285175 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

Adding to 1311443541342 its reverse (2431453441131), we get a palindrome (3742896982473).

The spelling of 1311443541342 in words is "one trillion, three hundred eleven billion, four hundred forty-three million, five hundred forty-one thousand, three hundred forty-two".