9823656131 has 2 divisors, whose sum is σ = 9823656132. Its totient is φ = 9823656130.

The previous prime is 9823656119. The next prime is 9823656133. The reversal of 9823656131 is 1316563289.

It is a strong prime.

It is an emirp because it is prime and its reverse (1316563289) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9823656131 is a prime.

It is a super-2 number, since 2×9823656131² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 9823656133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9823656133) 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, 4911828065 + 4911828066.

It is an arithmetic number, because the mean of its divisors is an integer number (4911828066).

Almost surely, 2^9823656131 is an apocalyptic number.

9823656131 is a deficient number, since it is larger than the sum of its proper divisors (1).

9823656131 is an equidigital number, since it uses as much as digits as its factorization.

9823656131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 44.

The square root of 9823656131 is about 99114.3588538008. The cubic root of 9823656131 is about 2141.6954662094.

The spelling of 9823656131 in words is "nine billion, eight hundred twenty-three million, six hundred fifty-six thousand, one hundred thirty-one".