1311436405343 has 4 divisors (see below), whose sum is σ = 1311442704408. Its totient is φ = 1311430106280.

The previous prime is 1311436405291. The next prime is 1311436405373. The reversal of 1311436405343 is 3435046341131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1311436405343 - 2¹⁰ = 1311436404319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311436405297 and 1311436405306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311436405373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2826173 + ... + 3257318.

It is an arithmetic number, because the mean of its divisors is an integer number (327860676102).

Almost surely, 2^{1311436405343} is an apocalyptic number.

1311436405343 is a deficient number, since it is larger than the sum of its proper divisors (6299065).

1311436405343 is an equidigital number, since it uses as much as digits as its factorization.

1311436405343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6299064.

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 1311436405343 in words is "one trillion, three hundred eleven billion, four hundred thirty-six million, four hundred five thousand, three hundred forty-three".