8519399131 has 2 divisors, whose sum is σ = 8519399132. Its totient is φ = 8519399130.

The previous prime is 8519399069. The next prime is 8519399167. The reversal of 8519399131 is 1319939158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8519399131 - 2¹¹ = 8519397083 is a prime.

It is a super-2 number, since 2×8519399131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8519399191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4259699565 + 4259699566.

It is an arithmetic number, because the mean of its divisors is an integer number (4259699566).

Almost surely, 2^8519399131 is an apocalyptic number.

8519399131 is a deficient number, since it is larger than the sum of its proper divisors (1).

8519399131 is an equidigital number, since it uses as much as digits as its factorization.

8519399131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 49.

The square root of 8519399131 is about 92300.5911736214. The cubic root of 8519399131 is about 2042.3789313831.

The spelling of 8519399131 in words is "eight billion, five hundred nineteen million, three hundred ninety-nine thousand, one hundred thirty-one".