8131008 has 28 divisors (see below), whose sum is σ = 21513800. Its totient is φ = 2710272.

The previous prime is 8131003. The next prime is 8131033. The reversal of 8131008 is 8001318.

It is a happy number.

It is a super-2 number, since 2×8131008² = 132226582192128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8131003) 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, 20983 + ... + 21366.

It is an arithmetic number, because the mean of its divisors is an integer number (768350).

Almost surely, 2^8131008 is an apocalyptic number.

It is an amenable number.

8131008 is an abundant number, since it is smaller than the sum of its proper divisors (13382792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8131008 is a wasteful number, since it uses less digits than its factorization.

8131008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42364 (or 42354 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 8131008 is about 2851.4922409153. The cubic root of 8131008 is about 201.0858275575.

The spelling of 8131008 in words is "eight million, one hundred thirty-one thousand, eight".