312110230021 has 2 divisors, whose sum is σ = 312110230022. Its totient is φ = 312110230020.

The previous prime is 312110229961. The next prime is 312110230027. The reversal of 312110230021 is 120032011213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273806260225 + 38303969796 = 523265^2 + 195714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312110230021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312110229977 and 312110230004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312110230027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156055115010 + 156055115011.

It is an arithmetic number, because the mean of its divisors is an integer number (156055115011).

Almost surely, 2^312110230021 is an apocalyptic number.

It is an amenable number.

312110230021 is a deficient number, since it is larger than the sum of its proper divisors (1).

312110230021 is an equidigital number, since it uses as much as digits as its factorization.

312110230021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 312110230021 its reverse (120032011213), we get a palindrome (432142241234).

The spelling of 312110230021 in words is "three hundred twelve billion, one hundred ten million, two hundred thirty thousand, twenty-one".