312112313 has 4 divisors (see below), whose sum is σ = 312148260. Its totient is φ = 312076368.

The previous prime is 312112271. The next prime is 312112327. The reversal of 312112313 is 313211213.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 93161104 + 218951209 = 9652^2 + 14797^2 .

It is a cyclic number.

It is not a de Polignac number, because 312112313 - 2⁶ = 312112249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312112291 and 312112300.

It is not an unprimeable number, because it can be changed into a prime (312112343) 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, 4031 + ... + 25307.

It is an arithmetic number, because the mean of its divisors is an integer number (78037065).

Almost surely, 2^312112313 is an apocalyptic number.

It is an amenable number.

312112313 is a deficient number, since it is larger than the sum of its proper divisors (35947).

312112313 is a wasteful number, since it uses less digits than its factorization.

312112313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35946.

The product of its digits is 108, while the sum is 17.

The square root of 312112313 is about 17666.7006823572. The cubic root of 312112313 is about 678.3236628416.

Adding to 312112313 its reverse (313211213), we get a palindrome (625323526).

The spelling of 312112313 in words is "three hundred twelve million, one hundred twelve thousand, three hundred thirteen".