8131982 has 12 divisors (see below), whose sum is σ = 12607128. Its totient is φ = 3933900.

The previous prime is 8131969. The next prime is 8131993. The reversal of 8131982 is 2891318.

It is a super-2 number, since 2×8131982² = 132258262496648, which contains 22 as substring.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 194 + ... + 4037.

It is an arithmetic number, because the mean of its divisors is an integer number (1050594).

Almost surely, 2^8131982 is an apocalyptic number.

8131982 is a deficient number, since it is larger than the sum of its proper divisors (4475146).

8131982 is a wasteful number, since it uses less digits than its factorization.

8131982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4295 (or 4264 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 8131982 is about 2851.6630235706. The cubic root of 8131982 is about 201.0938564831.

The spelling of 8131982 in words is "eight million, one hundred thirty-one thousand, nine hundred eighty-two".