312276889 has 2 divisors, whose sum is σ = 312276890. Its totient is φ = 312276888.

The previous prime is 312276821. The next prime is 312276907. The reversal of 312276889 is 988672213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237160000 + 75116889 = 15400^2 + 8667^2 .

It is a cyclic number.

It is not a de Polignac number, because 312276889 - 2¹⁹ = 311752601 is a prime.

It is not a weakly prime, because it can be changed into another prime (312271889) 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, 156138444 + 156138445.

It is an arithmetic number, because the mean of its divisors is an integer number (156138445).

Almost surely, 2^312276889 is an apocalyptic number.

It is an amenable number.

312276889 is a deficient number, since it is larger than the sum of its proper divisors (1).

312276889 is an equidigital number, since it uses as much as digits as its factorization.

312276889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 46.

The square root of 312276889 is about 17671.3578708598. The cubic root of 312276889 is about 678.4428679851.

The spelling of 312276889 in words is "three hundred twelve million, two hundred seventy-six thousand, eight hundred eighty-nine".