312223223 has 4 divisors (see below), whose sum is σ = 336240408. Its totient is φ = 288206040.

The previous prime is 312223211. The next prime is 312223237. The reversal of 312223223 is 322322213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322322213 = 19 ⋅16964327.

It is a cyclic number.

It is not a de Polignac number, because 312223223 - 2¹⁸ = 311961079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312223195 and 312223204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312223253) 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, 12008573 + ... + 12008598.

It is an arithmetic number, because the mean of its divisors is an integer number (84060102).

Almost surely, 2^312223223 is an apocalyptic number.

312223223 is a deficient number, since it is larger than the sum of its proper divisors (24017185).

312223223 is a wasteful number, since it uses less digits than its factorization.

312223223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24017184.

The product of its digits is 864, while the sum is 20.

The square root of 312223223 is about 17669.8393597678. The cubic root of 312223223 is about 678.4040014085.

Adding to 312223223 its reverse (322322213), we get a palindrome (634545436).

The spelling of 312223223 in words is "three hundred twelve million, two hundred twenty-three thousand, two hundred twenty-three".