312112141211231 has 2 divisors, whose sum is σ = 312112141211232. Its totient is φ = 312112141211230.

The previous prime is 312112141211203. The next prime is 312112141211237. The reversal of 312112141211231 is 132112141211213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312112141211231 is a prime.

It is a super-2 number, since 2×312112141211231² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312112141211231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312112141211237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156056070605615 + 156056070605616.

It is an arithmetic number, because the mean of its divisors is an integer number (156056070605616).

Almost surely, 2^{312112141211231} is an apocalyptic number.

312112141211231 is a deficient number, since it is larger than the sum of its proper divisors (1).

312112141211231 is an equidigital number, since it uses as much as digits as its factorization.

312112141211231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 26.

Adding to 312112141211231 its reverse (132112141211213), we get a palindrome (444224282422444).

The spelling of 312112141211231 in words is "three hundred twelve trillion, one hundred twelve billion, one hundred forty-one million, two hundred eleven thousand, two hundred thirty-one".