31109745504556 has 12 divisors (see below), whose sum is σ = 54488866381992. Its totient is φ = 15541497966848.

The previous prime is 31109745504553. The next prime is 31109745504581. The reversal of 31109745504556 is 65540554790113.

It is a junction number, because it is equal to n+sod(n) for n = 31109745504497 and 31109745504506.

It is not an unprimeable number, because it can be changed into a prime (31109745504553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3343691125 + ... + 3343700428.

It is an arithmetic number, because the mean of its divisors is an integer number (4540738865166).

Almost surely, 2^{31109745504556} is an apocalyptic number.

It is an amenable number.

31109745504556 is a deficient number, since it is larger than the sum of its proper divisors (23379120877436).

31109745504556 is a wasteful number, since it uses less digits than its factorization.

31109745504556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6687392720 (or 6687392718 counting only the distinct ones).

The product of its (nonzero) digits is 11340000, while the sum is 55.

The spelling of 31109745504556 in words is "thirty-one trillion, one hundred nine billion, seven hundred forty-five million, five hundred four thousand, five hundred fifty-six".