312068849 has 2 divisors, whose sum is σ = 312068850. Its totient is φ = 312068848.

The previous prime is 312068843. The next prime is 312068851. The reversal of 312068849 is 948860213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282475249 + 29593600 = 16807^2 + 5440^2 .

It is a cyclic number.

It is not a de Polignac number, because 312068849 - 2⁴ = 312068833 is a prime.

Together with 312068851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312068843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156034424 + 156034425.

It is an arithmetic number, because the mean of its divisors is an integer number (156034425).

Almost surely, 2^312068849 is an apocalyptic number.

It is an amenable number.

312068849 is a deficient number, since it is larger than the sum of its proper divisors (1).

312068849 is an equidigital number, since it uses as much as digits as its factorization.

312068849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 312068849 is about 17665.4705286896. The cubic root of 312068849 is about 678.2921741466.

The spelling of 312068849 in words is "three hundred twelve million, sixty-eight thousand, eight hundred forty-nine".