9931123 has 2 divisors, whose sum is σ = 9931124. Its totient is φ = 9931122.

The previous prime is 9931121. The next prime is 9931171. The reversal of 9931123 is 3211399.

9931123 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9931123 - 2¹ = 9931121 is a prime.

It is a super-2 number, since 2×9931123² = 197254408082258, which contains 22 as substring.

Together with 9931121, it forms a pair of twin primes.

It is equal to p₆₆₀₃₄₉ and since 9931123 and 660349 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 9931091 and 9931100.

It is not a weakly prime, because it can be changed into another prime (9931121) 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, 4965561 + 4965562.

It is an arithmetic number, because the mean of its divisors is an integer number (4965562).

Almost surely, 2^9931123 is an apocalyptic number.

9931123 is a deficient number, since it is larger than the sum of its proper divisors (1).

9931123 is an equidigital number, since it uses as much as digits as its factorization.

9931123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458, while the sum is 28.

The square root of 9931123 is about 3151.3684329193. The cubic root of 9931123 is about 214.9476923408.

It can be divided in two parts, 993 and 1123, that added together give a square (2116 = 46²).

The spelling of 9931123 in words is "nine million, nine hundred thirty-one thousand, one hundred twenty-three".