8131147 has 2 divisors, whose sum is σ = 8131148. Its totient is φ = 8131146.

The previous prime is 8131139. The next prime is 8131153. The reversal of 8131147 is 7411318.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8131147 - 2³ = 8131139 is a prime.

It is a super-2 number, since 2×8131147² = 132231103071218, which contains 22 as substring.

8131147 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8131127) 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 as a sum of consecutive naturals, namely, 4065573 + 4065574.

It is an arithmetic number, because the mean of its divisors is an integer number (4065574).

Almost surely, 2^8131147 is an apocalyptic number.

8131147 is a deficient number, since it is larger than the sum of its proper divisors (1).

8131147 is an equidigital number, since it uses as much as digits as its factorization.

8131147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 25.

The square root of 8131147 is about 2851.5166140144. The cubic root of 8131147 is about 201.0869734085.

The spelling of 8131147 in words is "eight million, one hundred thirty-one thousand, one hundred forty-seven".