231012313112309 has 2 divisors, whose sum is σ = 231012313112310. Its totient is φ = 231012313112308.

The previous prime is 231012313112281. The next prime is 231012313112359. The reversal of 231012313112309 is 903211313210132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139486067818084 + 91526245294225 = 11810422^2 + 9566935^2 .

It is a cyclic number.

It is not a de Polignac number, because 231012313112309 - 2⁴⁰ = 229912801484533 is a prime.

It is a super-2 number, since 2×231012313112309² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231012313112359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115506156556154 + 115506156556155.

It is an arithmetic number, because the mean of its divisors is an integer number (115506156556155).

Almost surely, 2^{231012313112309} is an apocalyptic number.

It is an amenable number.

231012313112309 is a deficient number, since it is larger than the sum of its proper divisors (1).

231012313112309 is an equidigital number, since it uses as much as digits as its factorization.

231012313112309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 231012313112309 in words is "two hundred thirty-one trillion, twelve billion, three hundred thirteen million, one hundred twelve thousand, three hundred nine".