312100300261 has 2 divisors, whose sum is σ = 312100300262. Its totient is φ = 312100300260.

The previous prime is 312100300243. The next prime is 312100300271. The reversal of 312100300261 is 162003001213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311775940161 + 324360100 = 558369^2 + 18010^2 .

It is a cyclic number.

It is not a de Polignac number, because 312100300261 - 2⁷ = 312100300133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312100300201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156050150130 + 156050150131.

It is an arithmetic number, because the mean of its divisors is an integer number (156050150131).

Almost surely, 2^312100300261 is an apocalyptic number.

It is an amenable number.

312100300261 is a deficient number, since it is larger than the sum of its proper divisors (1).

312100300261 is an equidigital number, since it uses as much as digits as its factorization.

312100300261 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 312100300261 its reverse (162003001213), we get a palindrome (474103301474).

The spelling of 312100300261 in words is "three hundred twelve billion, one hundred million, three hundred thousand, two hundred sixty-one".