9992131 has 2 divisors, whose sum is σ = 9992132. Its totient is φ = 9992130.

The previous prime is 9992117. The next prime is 9992149. The reversal of 9992131 is 1312999.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9992131 is a prime.

It is a super-2 number, since 2×9992131² = 199685363842322, which contains 22 as substring.

9992131 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9992161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996065 + 4996066.

It is an arithmetic number, because the mean of its divisors is an integer number (4996066).

Almost surely, 2^9992131 is an apocalyptic number.

9992131 is a deficient number, since it is larger than the sum of its proper divisors (1).

9992131 is an equidigital number, since it uses as much as digits as its factorization.

9992131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4374, while the sum is 34.

The square root of 9992131 is about 3161.0332171618. The cubic root of 9992131 is about 215.3869433520.

The spelling of 9992131 in words is "nine million, nine hundred ninety-two thousand, one hundred thirty-one".