312242020042009 has 2 divisors, whose sum is σ = 312242020042010. Its totient is φ = 312242020042008.

The previous prime is 312242020042003. The next prime is 312242020042081. The reversal of 312242020042009 is 900240020242213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260291758273600 + 51950261768409 = 16133560^2 + 7207653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312242020042009 is a prime.

It is not a weakly prime, because it can be changed into another prime (312242020042003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156121010021004 + 156121010021005.

It is an arithmetic number, because the mean of its divisors is an integer number (156121010021005).

Almost surely, 2^{312242020042009} is an apocalyptic number.

It is an amenable number.

312242020042009 is a deficient number, since it is larger than the sum of its proper divisors (1).

312242020042009 is an equidigital number, since it uses as much as digits as its factorization.

312242020042009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 312242020042009 in words is "three hundred twelve trillion, two hundred forty-two billion, twenty million, forty-two thousand, nine".