1311908403535 has 16 divisors (see below), whose sum is σ = 1582964301312. Its totient is φ = 1043746912000.

The previous prime is 1311908403529. The next prime is 1311908403649. The reversal of 1311908403535 is 5353048091131.

It is not a de Polignac number, because 1311908403535 - 2⁹ = 1311908403023 is a prime.

It is a super-2 number, since 2×1311908403535² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311908403491 and 1311908403500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3348867 + ... + 3720043.

It is an arithmetic number, because the mean of its divisors is an integer number (98935268832).

Almost surely, 2^{1311908403535} is an apocalyptic number.

1311908403535 is a deficient number, since it is larger than the sum of its proper divisors (271055897777).

1311908403535 is a wasteful number, since it uses less digits than its factorization.

1311908403535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375074.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 1311908403535 in words is "one trillion, three hundred eleven billion, nine hundred eight million, four hundred three thousand, five hundred thirty-five".