312313405 has 4 divisors (see below), whose sum is σ = 374776092. Its totient is φ = 249850720.

The previous prime is 312313403. The next prime is 312313427. The reversal of 312313405 is 504313213.

312313405 = 5584² + 5585² + ... + 5593².

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 159617956 + 152695449 = 12634^2 + 12357^2 .

It is not a de Polignac number, because 312313405 - 2¹ = 312313403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312313403) 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, 31231336 + ... + 31231345.

It is an arithmetic number, because the mean of its divisors is an integer number (93694023).

Almost surely, 2^312313405 is an apocalyptic number.

It is an amenable number.

312313405 is a deficient number, since it is larger than the sum of its proper divisors (62462687).

312313405 is an equidigital number, since it uses as much as digits as its factorization.

312313405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62462686.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 312313405 is about 17672.3910380005. The cubic root of 312313405 is about 678.4693114557.

Adding to 312313405 its reverse (504313213), we get a palindrome (816626618).

The spelling of 312313405 in words is "three hundred twelve million, three hundred thirteen thousand, four hundred five".