8291195131 has 2 divisors, whose sum is σ = 8291195132. Its totient is φ = 8291195130.

The previous prime is 8291195119. The next prime is 8291195173. The reversal of 8291195131 is 1315911928.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8291195131 - 2¹¹ = 8291193083 is a prime.

It is a super-2 number, since 2×8291195131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8291192131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4145597565 + 4145597566.

It is an arithmetic number, because the mean of its divisors is an integer number (4145597566).

Almost surely, 2^8291195131 is an apocalyptic number.

8291195131 is a deficient number, since it is larger than the sum of its proper divisors (1).

8291195131 is an equidigital number, since it uses as much as digits as its factorization.

8291195131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 40.

The square root of 8291195131 is about 91055.9999725444. Note that the first 4 decimals coincide. The cubic root of 8291195131 is about 2023.9776483228.

The spelling of 8291195131 in words is "eight billion, two hundred ninety-one million, one hundred ninety-five thousand, one hundred thirty-one".