312270899 has 2 divisors, whose sum is σ = 312270900. Its totient is φ = 312270898.

The previous prime is 312270877. The next prime is 312270911. The reversal of 312270899 is 998072213.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312270899 - 2¹⁶ = 312205363 is a prime.

It is a super-2 number, since 2×312270899² = 195026228724536402, which contains 22 as substring.

It is a Chen prime.

It is equal to p_16880495 and since 312270899 and 16880495 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (312270199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156135449 + 156135450.

It is an arithmetic number, because the mean of its divisors is an integer number (156135450).

Almost surely, 2^312270899 is an apocalyptic number.

312270899 is a deficient number, since it is larger than the sum of its proper divisors (1).

312270899 is an equidigital number, since it uses as much as digits as its factorization.

312270899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 312270899 is about 17671.1883867498. The cubic root of 312270899 is about 678.4385300626.

The spelling of 312270899 in words is "three hundred twelve million, two hundred seventy thousand, eight hundred ninety-nine".