8131366 has 16 divisors (see below), whose sum is σ = 12737088. Its totient is φ = 3889600.

The previous prime is 8131363. The next prime is 8131369. The reversal of 8131366 is 6631318.

It is an interprime number because it is at equal distance from previous prime (8131363) and next prime (8131369).

It is a super-2 number, since 2×8131366² = 132238226051912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8131363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3411 + ... + 5281.

It is an arithmetic number, because the mean of its divisors is an integer number (796068).

Almost surely, 2^8131366 is an apocalyptic number.

8131366 is a deficient number, since it is larger than the sum of its proper divisors (4605722).

8131366 is a wasteful number, since it uses less digits than its factorization.

8131366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967.

The product of its digits is 2592, while the sum is 28.

The square root of 8131366 is about 2851.5550143737. Note that the first 3 decimals coincide. The cubic root of 8131366 is about 201.0887787155.

The spelling of 8131366 in words is "eight million, one hundred thirty-one thousand, three hundred sixty-six".