8131347 has 20 divisors (see below), whose sum is σ = 13883056. Its totient is φ = 4646160.

The previous prime is 8131337. The next prime is 8131349. The reversal of 8131347 is 7431318.

It is not a de Polignac number, because 8131347 - 2⁸ = 8131091 is a prime.

It is a super-2 number, since 2×8131347² = 132237608068818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

8131347 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8131347.

It is not an unprimeable number, because it can be changed into a prime (8131349) 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 19 ways as a sum of consecutive naturals, for example, 6604 + ... + 7737.

Almost surely, 2^8131347 is an apocalyptic number.

8131347 is a deficient number, since it is larger than the sum of its proper divisors (5751709).

8131347 is a wasteful number, since it uses less digits than its factorization.

8131347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14360 (or 14351 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 8131347 is about 2851.5516828562. The cubic root of 8131347 is about 201.0886220920.

The spelling of 8131347 in words is "eight million, one hundred thirty-one thousand, three hundred forty-seven".