312312223 has 4 divisors (see below), whose sum is σ = 323081640. Its totient is φ = 301542808.

The previous prime is 312312167. The next prime is 312312241. The reversal of 312312223 is 322213213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312312223 - 2¹⁷ = 312181151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312312223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312313223) 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, 5384665 + ... + 5384722.

It is an arithmetic number, because the mean of its divisors is an integer number (80770410).

Almost surely, 2^312312223 is an apocalyptic number.

312312223 is a deficient number, since it is larger than the sum of its proper divisors (10769417).

312312223 is a wasteful number, since it uses less digits than its factorization.

312312223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10769416.

The product of its digits is 432, while the sum is 19.

The square root of 312312223 is about 17672.3575959746. The cubic root of 312312223 is about 678.4684555294.

Adding to 312312223 its reverse (322213213), we get a palindrome (634525436).

The spelling of 312312223 in words is "three hundred twelve million, three hundred twelve thousand, two hundred twenty-three".