8131975 has 12 divisors (see below), whose sum is σ = 10133280. Its totient is φ = 6473600.

The previous prime is 8131969. The next prime is 8131993. The reversal of 8131975 is 5791318.

It is a happy number.

It is not a de Polignac number, because 8131975 - 2⁹ = 8131463 is a prime.

It is a super-2 number, since 2×8131975² = 132258034801250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8131975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5295 + ... + 6655.

It is an arithmetic number, because the mean of its divisors is an integer number (844440).

Almost surely, 2^8131975 is an apocalyptic number.

8131975 is a deficient number, since it is larger than the sum of its proper divisors (2001305).

8131975 is a wasteful number, since it uses less digits than its factorization.

8131975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610 (or 1605 counting only the distinct ones).

The product of its digits is 7560, while the sum is 34.

The square root of 8131975 is about 2851.6617962164. The cubic root of 8131975 is about 201.0937987826.

The spelling of 8131975 in words is "eight million, one hundred thirty-one thousand, nine hundred seventy-five".