56831309866317 has 12 divisors (see below), whose sum is σ = 88146521425536. Its totient is φ = 32475034209240.

The previous prime is 56831309866301. The next prime is 56831309866381. The reversal of 56831309866317 is 71366890313865.

It is not a de Polignac number, because 56831309866317 - 2⁴ = 56831309866301 is a prime.

It is a super-2 number, since 2×56831309866317² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56831309366317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193303774909 + ... + 193303775202.

It is an arithmetic number, because the mean of its divisors is an integer number (7345543452128).

Almost surely, 2^{56831309866317} is an apocalyptic number.

It is an amenable number.

56831309866317 is a deficient number, since it is larger than the sum of its proper divisors (31315211559219).

56831309866317 is a wasteful number, since it uses less digits than its factorization.

56831309866317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386607550128 (or 386607550121 counting only the distinct ones).

The product of its (nonzero) digits is 117573120, while the sum is 66.

The spelling of 56831309866317 in words is "fifty-six trillion, eight hundred thirty-one billion, three hundred nine million, eight hundred sixty-six thousand, three hundred seventeen".