1311332434406 has 4 divisors (see below), whose sum is σ = 1966998651612. Its totient is φ = 655666217202.

The previous prime is 1311332434369. The next prime is 1311332434411. The reversal of 1311332434406 is 6044342331131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327833108600 + ... + 327833108603.

It is an arithmetic number, because the mean of its divisors is an integer number (491749662903).

Almost surely, 2^{1311332434406} is an apocalyptic number.

1311332434406 is a deficient number, since it is larger than the sum of its proper divisors (655666217206).

1311332434406 is an equidigital number, since it uses as much as digits as its factorization.

1311332434406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655666217205.

The product of its (nonzero) digits is 62208, while the sum is 35.

Adding to 1311332434406 its reverse (6044342331131), we get a palindrome (7355674765537).

The spelling of 1311332434406 in words is "one trillion, three hundred eleven billion, three hundred thirty-two million, four hundred thirty-four thousand, four hundred six".