31068055581556 has 72 divisors (see below), whose sum is σ = 66985359134400. Its totient is φ = 12528033460992.

The previous prime is 31068055581491. The next prime is 31068055581599. The reversal of 31068055581556 is 65518555086013.

It is a super-2 number, since 2×31068055581556² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31068055581556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10207345 + ... + 12896743.

It is an arithmetic number, because the mean of its divisors is an integer number (930352210200).

Almost surely, 2^{31068055581556} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31068055581556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33492679567200).

31068055581556 is an abundant number, since it is smaller than the sum of its proper divisors (35917303552844).

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

31068055581556 is a wasteful number, since it uses less digits than its factorization.

31068055581556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692901 (or 2692892 counting only the distinct ones).

The product of its (nonzero) digits is 21600000, while the sum is 58.

The spelling of 31068055581556 in words is "thirty-one trillion, sixty-eight billion, fifty-five million, five hundred eighty-one thousand, five hundred fifty-six".