31108048896681 has 27 divisors (see below), whose sum is σ = 45293538172701. Its totient is φ = 20573996900184.

The previous prime is 31108048896667. The next prime is 31108048896709. The reversal of 31108048896681 is 18669884080113.

The square root of 31108048896681 is 5577459.

It is a perfect power (a square), and thus also a powerful number.

31108048896681 is a `hidden beast` number, since 3 + 1 + 1 + 0 + 8 + 0 + 488 + 96 + 68 + 1 = 666.

It is not a de Polignac number, because 31108048896681 - 2¹⁷ = 31108048765609 is a prime.

It is a super-2 number, since 2×31108048896681² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31108048896601) 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 26 ways as a sum of consecutive naturals, for example, 2125004560 + ... + 2125019198.

Almost surely, 2^{31108048896681} is an apocalyptic number.

31108048896681 is the 5577459-th square number.

31108048896681 is the 2788730-th centered octagonal number.

It is an amenable number.

31108048896681 is a deficient number, since it is larger than the sum of its proper divisors (14185489276020).

31108048896681 is an frugal number, since it uses more digits than its factorization.

31108048896681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29538 (or 14769 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 63.

The spelling of 31108048896681 in words is "thirty-one trillion, one hundred eight billion, forty-eight million, eight hundred ninety-six thousand, six hundred eighty-one".