12231303131 has 2 divisors, whose sum is σ = 12231303132. Its totient is φ = 12231303130.

The previous prime is 12231303113. The next prime is 12231303209. The reversal of 12231303131 is 13130313221.

Together with previous prime (12231303113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12231303131 is a prime.

It is a super-2 number, since 2×12231303131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12231303031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115651565 + 6115651566.

It is an arithmetic number, because the mean of its divisors is an integer number (6115651566).

Almost surely, 2^12231303131 is an apocalyptic number.

12231303131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231303131 is an equidigital number, since it uses as much as digits as its factorization.

12231303131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 12231303131 its reverse (13130313221), we get a palindrome (25361616352).

The spelling of 12231303131 in words is "twelve billion, two hundred thirty-one million, three hundred three thousand, one hundred thirty-one".