1311533042343 has 8 divisors (see below), whose sum is σ = 1749208803456. Its totient is φ = 874106321400.

The previous prime is 1311533042329. The next prime is 1311533042353. The reversal of 1311533042343 is 3432403351131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1311533042343 - 2⁹ = 1311533041831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311533042353) 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, 62247753 + ... + 62268818.

It is an arithmetic number, because the mean of its divisors is an integer number (218651100432).

Almost surely, 2^{1311533042343} is an apocalyptic number.

1311533042343 is a deficient number, since it is larger than the sum of its proper divisors (437675761113).

1311533042343 is a wasteful number, since it uses less digits than its factorization.

1311533042343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124520085.

The product of its (nonzero) digits is 38880, while the sum is 33.

Adding to 1311533042343 its reverse (3432403351131), we get a palindrome (4743936393474).

The spelling of 1311533042343 in words is "one trillion, three hundred eleven billion, five hundred thirty-three million, forty-two thousand, three hundred forty-three".