312231012311 has 2 divisors, whose sum is σ = 312231012312. Its totient is φ = 312231012310.

The previous prime is 312231012293. The next prime is 312231012323. The reversal of 312231012311 is 113210132213.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312231012311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312231011311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156115506155 + 156115506156.

It is an arithmetic number, because the mean of its divisors is an integer number (156115506156).

Almost surely, 2^312231012311 is an apocalyptic number.

312231012311 is a deficient number, since it is larger than the sum of its proper divisors (1).

312231012311 is an equidigital number, since it uses as much as digits as its factorization.

312231012311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312231012311 its reverse (113210132213), we get a palindrome (425441144524).

The spelling of 312231012311 in words is "three hundred twelve billion, two hundred thirty-one million, twelve thousand, three hundred eleven".