312021210313 has 2 divisors, whose sum is σ = 312021210314. Its totient is φ = 312021210312.

The previous prime is 312021210269. The next prime is 312021210421. The reversal of 312021210313 is 313012120213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311953526784 + 67683529 = 558528^2 + 8227^2 .

It is a cyclic number.

It is not a de Polignac number, because 312021210313 - 2¹⁷ = 312021079241 is a prime.

It is not a weakly prime, because it can be changed into another prime (312021210913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156010605156 + 156010605157.

It is an arithmetic number, because the mean of its divisors is an integer number (156010605157).

Almost surely, 2^312021210313 is an apocalyptic number.

It is an amenable number.

312021210313 is a deficient number, since it is larger than the sum of its proper divisors (1).

312021210313 is an equidigital number, since it uses as much as digits as its factorization.

312021210313 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 19.

Adding to 312021210313 its reverse (313012120213), we get a palindrome (625033330526).

The spelling of 312021210313 in words is "three hundred twelve billion, twenty-one million, two hundred ten thousand, three hundred thirteen".