312231103321 has 2 divisors, whose sum is σ = 312231103322. Its totient is φ = 312231103320.

The previous prime is 312231103267. The next prime is 312231103333. The reversal of 312231103321 is 123301132213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254924010000 + 57307093321 = 504900^2 + 239389^2 .

It is a cyclic number.

It is not a de Polignac number, because 312231103321 - 2⁷ = 312231103193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312231103292 and 312231103301.

It is not a weakly prime, because it can be changed into another prime (312231103621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156115551660 + 156115551661.

It is an arithmetic number, because the mean of its divisors is an integer number (156115551661).

Almost surely, 2^312231103321 is an apocalyptic number.

It is an amenable number.

312231103321 is a deficient number, since it is larger than the sum of its proper divisors (1).

312231103321 is an equidigital number, since it uses as much as digits as its factorization.

312231103321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 312231103321 its reverse (123301132213), we get a palindrome (435532235534).

The spelling of 312231103321 in words is "three hundred twelve billion, two hundred thirty-one million, one hundred three thousand, three hundred twenty-one".