99680131 has 2 divisors, whose sum is σ = 99680132. Its totient is φ = 99680130.

The previous prime is 99680123. The next prime is 99680177. The reversal of 99680131 is 13108699.

It is a weak prime.

It is an emirp because it is prime and its reverse (13108699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99680131 - 2³ = 99680123 is a prime.

It is a super-2 number, since 2×99680131² = 19872257032354322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99680111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49840065 + 49840066.

It is an arithmetic number, because the mean of its divisors is an integer number (49840066).

Almost surely, 2^99680131 is an apocalyptic number.

99680131 is a deficient number, since it is larger than the sum of its proper divisors (1).

99680131 is an equidigital number, since it uses as much as digits as its factorization.

99680131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 99680131 is about 9983.9937399820. The cubic root of 99680131 is about 463.6634546180.

The spelling of 99680131 in words is "ninety-nine million, six hundred eighty thousand, one hundred thirty-one".