1311646317870 has 64 divisors (see below), whose sum is σ = 3787008929280. Its totient is φ = 284025667968.

The previous prime is 1311646317841. The next prime is 1311646317881. The reversal of 1311646317870 is 787136461131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164362717 + ... + 164370696.

It is an arithmetic number, because the mean of its divisors is an integer number (59172014520).

Almost surely, 2^{1311646317870} is an apocalyptic number.

1311646317870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311646317870 is an abundant number, since it is smaller than the sum of its proper divisors (2475362611410).

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

1311646317870 is a wasteful number, since it uses less digits than its factorization.

1311646317870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328733449.

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 1311646317870 in words is "one trillion, three hundred eleven billion, six hundred forty-six million, three hundred seventeen thousand, eight hundred seventy".