312312313 has 4 divisors (see below), whose sum is σ = 313947648. Its totient is φ = 310676980.

The previous prime is 312312307. The next prime is 312312337. The reversal of 312312313 is 313213213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313213213 = 173 ⋅1810481.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312312313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312312353) 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, 817381 + ... + 817762.

It is an arithmetic number, because the mean of its divisors is an integer number (78486912).

Almost surely, 2^312312313 is an apocalyptic number.

It is an amenable number.

312312313 is a deficient number, since it is larger than the sum of its proper divisors (1635335).

312312313 is a wasteful number, since it uses less digits than its factorization.

312312313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635334.

The product of its digits is 324, while the sum is 19.

The square root of 312312313 is about 17672.3601423239. The cubic root of 312312313 is about 678.4685207015.

Adding to 312312313 its reverse (313213213), we get a palindrome (625525526).

The spelling of 312312313 in words is "three hundred twelve million, three hundred twelve thousand, three hundred thirteen".