312223313 has 4 divisors (see below), whose sum is σ = 313123440. Its totient is φ = 311323188.

The previous prime is 312223267. The next prime is 312223337. The reversal of 312223313 is 313322213.

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: 313322213 = 367 ⋅853739.

It is a cyclic number.

It is not a de Polignac number, because 312223313 - 2¹² = 312219217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312223913) 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, 449543 + ... + 450236.

It is an arithmetic number, because the mean of its divisors is an integer number (78280860).

Almost surely, 2^312223313 is an apocalyptic number.

It is an amenable number.

312223313 is a deficient number, since it is larger than the sum of its proper divisors (900127).

312223313 is an equidigital number, since it uses as much as digits as its factorization.

312223313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900126.

The product of its digits is 648, while the sum is 20.

The square root of 312223313 is about 17669.8419064801. The cubic root of 312223313 is about 678.4040665930.

Adding to 312223313 its reverse (313322213), we get a palindrome (625545526).

The spelling of 312223313 in words is "three hundred twelve million, two hundred twenty-three thousand, three hundred thirteen".