312030110209 has 4 divisors (see below), whose sum is σ = 312053688900. Its totient is φ = 312006531520.

The previous prime is 312030110191. The next prime is 312030110261. The reversal of 312030110209 is 902011030213.

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 190178849025 + 121851261184 = 436095^2 + 349072^2 .

It is a cyclic number.

It is not a de Polignac number, because 312030110209 - 2⁷ = 312030110081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312030110209.

It is not an unprimeable number, because it can be changed into a prime (312030110279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11769484 + ... + 11795965.

It is an arithmetic number, because the mean of its divisors is an integer number (78013422225).

Almost surely, 2^312030110209 is an apocalyptic number.

It is an amenable number.

312030110209 is a deficient number, since it is larger than the sum of its proper divisors (23578691).

312030110209 is a wasteful number, since it uses less digits than its factorization.

312030110209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23578690.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 312030110209 in words is "three hundred twelve billion, thirty million, one hundred ten thousand, two hundred nine".