312040334205 has 20 divisors (see below), whose sum is σ = 559361192412. Its totient is φ = 166421511360.

The previous prime is 312040334197. The next prime is 312040334251. The reversal of 312040334205 is 502433040213.

312040334205 is a `hidden beast` number, since 3 + 1 + 20 + 403 + 34 + 205 = 666.

312040334205 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 240581421081 + 71458913124 = 490491^2 + 267318^2 .

It is not a de Polignac number, because 312040334205 - 2³ = 312040334197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 385234576 + ... + 385235385.

Almost surely, 2^312040334205 is an apocalyptic number.

It is an amenable number.

312040334205 is a deficient number, since it is larger than the sum of its proper divisors (247320858207).

312040334205 is an equidigital number, since it uses as much as digits as its factorization.

312040334205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770469978 (or 770469969 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 312040334205 its reverse (502433040213), we get a palindrome (814473374418).

The spelling of 312040334205 in words is "three hundred twelve billion, forty million, three hundred thirty-four thousand, two hundred five".