312810089 has 4 divisors (see below), whose sum is σ = 313056324. Its totient is φ = 312563856.

The previous prime is 312810077. The next prime is 312810161. The reversal of 312810089 is 980018213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97219600 + 215590489 = 9860^2 + 14683^2 .

It is a cyclic number.

It is not a de Polignac number, because 312810089 - 2¹² = 312805993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312810049) 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 in 3 ways as a sum of consecutive naturals, for example, 121202 + ... + 123755.

It is an arithmetic number, because the mean of its divisors is an integer number (78264081).

Almost surely, 2^312810089 is an apocalyptic number.

It is an amenable number.

312810089 is a deficient number, since it is larger than the sum of its proper divisors (246235).

312810089 is a wasteful number, since it uses less digits than its factorization.

312810089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246234.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 312810089 is about 17686.4379963858. The cubic root of 312810089 is about 678.8287862266.

The spelling of 312810089 in words is "three hundred twelve million, eight hundred ten thousand, eighty-nine".