12310031 has 2 divisors, whose sum is σ = 12310032. Its totient is φ = 12310030.

The previous prime is 12310027. The next prime is 12310033. The reversal of 12310031 is 13001321.

12310031 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (13001321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12310031 - 2² = 12310027 is a prime.

It is a super-2 number, since 2×12310031² = 303073726441922, which contains 22 as substring.

Together with 12310033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12309994 and 12310021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12310033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155015 + 6155016.

It is an arithmetic number, because the mean of its divisors is an integer number (6155016).

Almost surely, 2^12310031 is an apocalyptic number.

12310031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12310031 is an equidigital number, since it uses as much as digits as its factorization.

12310031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 12310031 is about 3508.5653763326. The cubic root of 12310031 is about 230.8977577682.

Adding to 12310031 its reverse (13001321), we get a palindrome (25311352).

The spelling of 12310031 in words is "twelve million, three hundred ten thousand, thirty-one".