4312012315549 has 2 divisors, whose sum is σ = 4312012315550. Its totient is φ = 4312012315548.

The previous prime is 4312012315537. The next prime is 4312012315577. The reversal of 4312012315549 is 9455132102134.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3079035259524 + 1232977056025 = 1754718^2 + 1110395^2 .

It is a cyclic number.

It is not a de Polignac number, because 4312012315549 - 2⁷ = 4312012315421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4312012315529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2156006157774 + 2156006157775.

It is an arithmetic number, because the mean of its divisors is an integer number (2156006157775).

Almost surely, 2^{4312012315549} is an apocalyptic number.

It is an amenable number.

4312012315549 is a deficient number, since it is larger than the sum of its proper divisors (1).

4312012315549 is an equidigital number, since it uses as much as digits as its factorization.

4312012315549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 4312012315549 in words is "four trillion, three hundred twelve billion, twelve million, three hundred fifteen thousand, five hundred forty-nine".