8112981 has 16 divisors (see below), whose sum is σ = 11448000. Its totient is φ = 5096448.

The previous prime is 8112977. The next prime is 8112989. The reversal of 8112981 is 1892118.

8112981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8112981 - 2² = 8112977 is a prime.

It is a super-2 number, since 2×8112981² = 131640921412722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8112989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17845 + ... + 18293.

It is an arithmetic number, because the mean of its divisors is an integer number (715500).

Almost surely, 2^8112981 is an apocalyptic number.

It is an amenable number.

8112981 is a deficient number, since it is larger than the sum of its proper divisors (3335019).

8112981 is a wasteful number, since it uses less digits than its factorization.

8112981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788.

The product of its digits is 1152, while the sum is 30.

The square root of 8112981 is about 2848.3295104324. The cubic root of 8112981 is about 200.9371105941.

The spelling of 8112981 in words is "eight million, one hundred twelve thousand, nine hundred eighty-one".