8131967 has 4 divisors (see below), whose sum is σ = 8610336. Its totient is φ = 7653600.

The previous prime is 8131961. The next prime is 8131969. The reversal of 8131967 is 7691318.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8131967 - 2¹⁰ = 8130943 is a prime.

It is a super-2 number, since 2×8131967² = 132257774578178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8131961) 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, 239159 + ... + 239192.

It is an arithmetic number, because the mean of its divisors is an integer number (2152584).

Almost surely, 2^8131967 is an apocalyptic number.

8131967 is a deficient number, since it is larger than the sum of its proper divisors (478369).

8131967 is a wasteful number, since it uses less digits than its factorization.

8131967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478368.

The product of its digits is 9072, while the sum is 35.

The square root of 8131967 is about 2851.6603935251. The cubic root of 8131967 is about 201.0937328392.

The spelling of 8131967 in words is "eight million, one hundred thirty-one thousand, nine hundred sixty-seven".