312103212101 has 2 divisors, whose sum is σ = 312103212102. Its totient is φ = 312103212100.

The previous prime is 312103212061. The next prime is 312103212221. The reversal of 312103212101 is 101212301213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 257988821476 + 54114390625 = 507926^2 + 232625^2 .

It is a cyclic number.

It is not a de Polignac number, because 312103212101 - 2⁶ = 312103212037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312103212101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312103212301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156051606050 + 156051606051.

It is an arithmetic number, because the mean of its divisors is an integer number (156051606051).

Almost surely, 2^312103212101 is an apocalyptic number.

It is an amenable number.

312103212101 is a deficient number, since it is larger than the sum of its proper divisors (1).

312103212101 is an equidigital number, since it uses as much as digits as its factorization.

312103212101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 312103212101 its reverse (101212301213), we get a palindrome (413315513314).

The spelling of 312103212101 in words is "three hundred twelve billion, one hundred three million, two hundred twelve thousand, one hundred one".